Merge branch '2.8' into 3.4

* 2.8:
  Enable native_constant_invocation CS fixer

Debug.php

@@ -23,10 +23,7 @@ class Debug
     /**
      * Enables the debug tools.
      *
-     * This method registers an error handler and an exception handler.
-     *
-     * If the Symfony ClassLoader component is available, a special
-     * class loader is also registered.
+     * This method registers an error handler, an exception handler and a special class loader.
      *
      * @param int  $errorReportingLevel The level of error reporting you want
      * @param bool $displayErrors       Whether to display errors (for development) or just log them (for production)
@@ -45,7 +42,7 @@ class Debug
             error_reporting(E_ALL);
         }
 
-        if (!\in_array(PHP_SAPI, array('cli', 'phpdbg'), true)) {
+        if (!\in_array(\PHP_SAPI, array('cli', 'phpdbg'), true)) {
             ini_set('display_errors', 0);
             ExceptionHandler::register();
         } elseif ($displayErrors && (!ini_get('log_errors') || ini_get('error_log'))) {

DebugClassLoader.php

@@ -40,11 +40,11 @@ class DebugClassLoader
     public function __construct(callable $classLoader)
     {
         $this->classLoader = $classLoader;
-        $this->isFinder = is_array($classLoader) && method_exists($classLoader[0], 'findFile');
+        $this->isFinder = \is_array($classLoader) && method_exists($classLoader[0], 'findFile');
 
         if (!isset(self::$caseCheck)) {
-            $file = file_exists(__FILE__) ? __FILE__ : rtrim(realpath('.'), DIRECTORY_SEPARATOR);
-            $i = strrpos($file, DIRECTORY_SEPARATOR);
+            $file = file_exists(__FILE__) ? __FILE__ : rtrim(realpath('.'), \DIRECTORY_SEPARATOR);
+            $i = strrpos($file, \DIRECTORY_SEPARATOR);
             $dir = substr($file, 0, 1 + $i);
             $file = substr($file, 1 + $i);
             $test = strtoupper($file) === $file ? strtolower($file) : strtoupper($file);
@@ -53,7 +53,7 @@ class DebugClassLoader
             if (false === $test || false === $i) {
                 // filesystem is case sensitive
                 self::$caseCheck = 0;
-            } elseif (substr($test, -strlen($file)) === $file) {
+            } elseif (substr($test, -\strlen($file)) === $file) {
                 // filesystem is case insensitive and realpath() normalizes the case of characters
                 self::$caseCheck = 1;
             } elseif (false !== stripos(PHP_OS, 'darwin')) {
@@ -85,7 +85,7 @@ class DebugClassLoader
         class_exists('Symfony\Component\Debug\ErrorHandler');
         class_exists('Psr\Log\LogLevel');
 
-        if (!is_array($functions = spl_autoload_functions())) {
+        if (!\is_array($functions = spl_autoload_functions())) {
             return;
         }
 
@@ -94,7 +94,7 @@ class DebugClassLoader
         }
 
         foreach ($functions as $function) {
-            if (!is_array($function) || !$function[0] instanceof self) {
+            if (!\is_array($function) || !$function[0] instanceof self) {
                 $function = array(new static($function), 'loadClass');
             }
 
@@ -107,7 +107,7 @@ class DebugClassLoader
      */
     public static function disable()
     {
-        if (!is_array($functions = spl_autoload_functions())) {
+        if (!\is_array($functions = spl_autoload_functions())) {
             return;
         }
 
@@ -116,7 +116,7 @@ class DebugClassLoader
         }
 
         foreach ($functions as $function) {
-            if (is_array($function) && $function[0] instanceof self) {
+            if (\is_array($function) && $function[0] instanceof self) {
                 $function = $function[0]->getClassLoader();
             }
 
@@ -150,7 +150,7 @@ class DebugClassLoader
                     }
                 }
             } else {
-                call_user_func($this->classLoader, $class);
+                \call_user_func($this->classLoader, $class);
                 $file = false;
             }
         } finally {
@@ -294,10 +294,10 @@ class DebugClassLoader
             }
             if (self::$caseCheck) {
                 $real = explode('\\', $class.strrchr($file, '.'));
-                $tail = explode(DIRECTORY_SEPARATOR, str_replace('/', DIRECTORY_SEPARATOR, $file));
+                $tail = explode(\DIRECTORY_SEPARATOR, str_replace('/', \DIRECTORY_SEPARATOR, $file));
 
-                $i = count($tail) - 1;
-                $j = count($real) - 1;
+                $i = \count($tail) - 1;
+                $j = \count($real) - 1;
 
                 while (isset($tail[$i], $real[$j]) && $tail[$i] === $real[$j]) {
                     --$i;
@@ -307,8 +307,8 @@ class DebugClassLoader
                 array_splice($tail, 0, $i + 1);
             }
             if (self::$caseCheck && $tail) {
-                $tail = DIRECTORY_SEPARATOR.implode(DIRECTORY_SEPARATOR, $tail);
-                $tailLen = strlen($tail);
+                $tail = \DIRECTORY_SEPARATOR.implode(\DIRECTORY_SEPARATOR, $tail);
+                $tailLen = \strlen($tail);
                 $real = $refl->getFileName();
 
                 if (2 === self::$caseCheck) {
@@ -333,7 +333,7 @@ class DebugClassLoader
 
                             $dir = $real;
                             $k = $kDir;
-                            $i = strlen($dir) - 1;
+                            $i = \strlen($dir) - 1;
                             while (!isset(self::$darwinCache[$k])) {
                                 self::$darwinCache[$k] = array($dir, array());
                                 self::$darwinCache[$dir] = &self::$darwinCache[$k];

ErrorHandler.php

@@ -11,17 +11,17 @@
 
 namespace Symfony\Component\Debug;
 
-use Psr\Log\LogLevel;
 use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
 use Symfony\Component\Debug\Exception\ContextErrorException;
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\Exception\FatalThrowableError;
 use Symfony\Component\Debug\Exception\OutOfMemoryException;
 use Symfony\Component\Debug\Exception\SilencedErrorContext;
-use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
-use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
 use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
 use Symfony\Component\Debug\FatalErrorHandler\FatalErrorHandlerInterface;
+use Symfony\Component\Debug\FatalErrorHandler\UndefinedFunctionFatalErrorHandler;
+use Symfony\Component\Debug\FatalErrorHandler\UndefinedMethodFatalErrorHandler;
 
 /**
  * A generic ErrorHandler for the PHP engine.
@@ -130,17 +130,17 @@ class ErrorHandler
             $handler->isRoot = true;
         }
 
-        if ($handlerIsNew && is_array($prev) && $prev[0] instanceof self) {
+        if ($handlerIsNew && \is_array($prev) && $prev[0] instanceof self) {
             $handler = $prev[0];
             $replace = false;
         }
         if (!$replace && $prev) {
             restore_error_handler();
-            $handlerIsRegistered = is_array($prev) && $handler === $prev[0];
+            $handlerIsRegistered = \is_array($prev) && $handler === $prev[0];
         } else {
             $handlerIsRegistered = true;
         }
-        if (is_array($prev = set_exception_handler(array($handler, 'handleException'))) && $prev[0] instanceof self) {
+        if (\is_array($prev = set_exception_handler(array($handler, 'handleException'))) && $prev[0] instanceof self) {
             restore_exception_handler();
             if (!$handlerIsRegistered) {
                 $handler = $prev[0];
@@ -180,7 +180,7 @@ class ErrorHandler
     {
         $loggers = array();
 
-        if (is_array($levels)) {
+        if (\is_array($levels)) {
             foreach ($levels as $type => $logLevel) {
                 if (empty($this->loggers[$type][0]) || $replace || $this->loggers[$type][0] === $this->bootstrappingLogger) {
                     $loggers[$type] = array($logger, $logLevel);
@@ -220,7 +220,7 @@ class ErrorHandler
             if (!isset($prev[$type])) {
                 throw new \InvalidArgumentException('Unknown error type: '.$type);
             }
-            if (!is_array($log)) {
+            if (!\is_array($log)) {
                 $log = array($log);
             } elseif (!array_key_exists(0, $log)) {
                 throw new \InvalidArgumentException('No logger provided');
@@ -353,7 +353,7 @@ class ErrorHandler
     {
         if ($prev !== $this->thrownErrors | $this->loggedErrors) {
             $handler = set_error_handler('var_dump');
-            $handler = is_array($handler) ? $handler[0] : null;
+            $handler = \is_array($handler) ? $handler[0] : null;
             restore_error_handler();
             if ($handler === $this) {
                 restore_error_handler();
@@ -396,7 +396,7 @@ class ErrorHandler
         }
         $scope = $this->scopedErrors & $type;
 
-        if (4 < $numArgs = func_num_args()) {
+        if (4 < $numArgs = \func_num_args()) {
             $context = $scope ? (func_get_arg(4) ?: array()) : array();
             $backtrace = 5 < $numArgs ? func_get_arg(5) : null; // defined on HHVM
         } else {
@@ -616,7 +616,7 @@ class ErrorHandler
         $previousHandler = null;
         $sameHandlerLimit = 10;
 
-        while (!is_array($handler) || !$handler[0] instanceof self) {
+        while (!\is_array($handler) || !$handler[0] instanceof self) {
             $handler = set_exception_handler('var_dump');
             restore_exception_handler();
 
@@ -757,7 +757,7 @@ class ErrorHandler
 
         for ($i = 0; isset($backtrace[$i]); ++$i) {
             if (isset($backtrace[$i]['file'], $backtrace[$i]['line']) && $backtrace[$i]['line'] === $line && $backtrace[$i]['file'] === $file) {
-                $lightTrace = array_slice($lightTrace, 1 + $i);
+                $lightTrace = \array_slice($lightTrace, 1 + $i);
                 break;
             }
         }

Exception/ClassNotFoundException.php

@@ -26,6 +26,9 @@ class ClassNotFoundException extends FatalErrorException
             $previous->getSeverity(),
             $previous->getFile(),
             $previous->getLine(),
+            null,
+            true,
+            null,
             $previous->getPrevious()
         );
         $this->setTrace($previous->getTrace());

Exception/FatalErrorException.php

@@ -18,9 +18,9 @@ namespace Symfony\Component\Debug\Exception;
  */
 class FatalErrorException extends \ErrorException
 {
-    public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true, array $trace = null)
+    public function __construct($message, $code, $severity, $filename, $lineno, $traceOffset = null, $traceArgs = true, array $trace = null, $previous = null)
     {
-        parent::__construct($message, $code, $severity, $filename, $lineno);
+        parent::__construct($message, $code, $severity, $filename, $lineno, $previous);
 
         if (null !== $trace) {
             if (!$traceArgs) {
@@ -31,7 +31,7 @@ class FatalErrorException extends \ErrorException
 
             $this->setTrace($trace);
         } elseif (null !== $traceOffset) {
-            if (function_exists('xdebug_get_function_stack')) {
+            if (\function_exists('xdebug_get_function_stack')) {
                 $trace = xdebug_get_function_stack();
                 if (0 < $traceOffset) {
                     array_splice($trace, -$traceOffset);
@@ -60,7 +60,7 @@ class FatalErrorException extends \ErrorException
 
                 unset($frame);
                 $trace = array_reverse($trace);
-            } elseif (function_exists('symfony_debug_backtrace')) {
+            } elseif (\function_exists('symfony_debug_backtrace')) {
                 $trace = symfony_debug_backtrace();
                 if (0 < $traceOffset) {
                     array_splice($trace, 0, $traceOffset);

Exception/FlattenException.php

@@ -53,7 +53,7 @@ class FlattenException
         $e->setStatusCode($statusCode);
         $e->setHeaders($headers);
         $e->setTraceFromException($exception);
-        $e->setClass(get_class($exception));
+        $e->setClass(\get_class($exception));
         $e->setFile($exception->getFile());
         $e->setLine($exception->getLine());
 
@@ -228,9 +228,9 @@ class FlattenException
             if ($value instanceof \__PHP_Incomplete_Class) {
                 // is_object() returns false on PHP<=7.1
                 $result[$key] = array('incomplete-object', $this->getClassNameFromIncomplete($value));
-            } elseif (is_object($value)) {
-                $result[$key] = array('object', get_class($value));
-            } elseif (is_array($value)) {
+            } elseif (\is_object($value)) {
+                $result[$key] = array('object', \get_class($value));
+            } elseif (\is_array($value)) {
                 if ($level > 10) {
                     $result[$key] = array('array', '*DEEP NESTED ARRAY*');
                 } else {
@@ -238,13 +238,13 @@ class FlattenException
                 }
             } elseif (null === $value) {
                 $result[$key] = array('null', null);
-            } elseif (is_bool($value)) {
+            } elseif (\is_bool($value)) {
                 $result[$key] = array('boolean', $value);
-            } elseif (is_int($value)) {
+            } elseif (\is_int($value)) {
                 $result[$key] = array('integer', $value);
-            } elseif (is_float($value)) {
+            } elseif (\is_float($value)) {
                 $result[$key] = array('float', $value);
-            } elseif (is_resource($value)) {
+            } elseif (\is_resource($value)) {
                 $result[$key] = array('resource', get_resource_type($value));
             } else {
                 $result[$key] = array('string', (string) $value);

Exception/UndefinedFunctionException.php

@@ -26,6 +26,9 @@ class UndefinedFunctionException extends FatalErrorException
             $previous->getSeverity(),
             $previous->getFile(),
             $previous->getLine(),
+            null,
+            true,
+            null,
             $previous->getPrevious()
         );
         $this->setTrace($previous->getTrace());

Exception/UndefinedMethodException.php

@@ -26,6 +26,9 @@ class UndefinedMethodException extends FatalErrorException
             $previous->getSeverity(),
             $previous->getFile(),
             $previous->getLine(),
+            null,
+            true,
+            null,
             $previous->getPrevious()
         );
         $this->setTrace($previous->getTrace());

ExceptionHandler.php

@@ -57,7 +57,7 @@ class ExceptionHandler
         $handler = new static($debug, $charset, $fileLinkFormat);
 
         $prev = set_exception_handler(array($handler, 'handle'));
-        if (is_array($prev) && $prev[0] instanceof ErrorHandler) {
+        if (\is_array($prev) && $prev[0] instanceof ErrorHandler) {
             restore_exception_handler();
             $prev[0]->setExceptionHandler(array($handler, 'handle'));
         }
@@ -142,7 +142,7 @@ class ExceptionHandler
         $this->caughtBuffer = null;
 
         try {
-            call_user_func($this->handler, $exception);
+            \call_user_func($this->handler, $exception);
             $this->caughtLength = $caughtLength;
         } catch (\Exception $e) {
             if (!$caughtLength) {
@@ -208,48 +208,54 @@ class ExceptionHandler
                 $title = 'Whoops, looks like something went wrong.';
         }
 
-        $content = '';
-        if ($this->debug) {
-            try {
-                $count = count($exception->getAllPrevious());
-                $total = $count + 1;
-                foreach ($exception->toArray() as $position => $e) {
-                    $ind = $count - $position + 1;
-                    $class = $this->formatClass($e['class']);
-                    $message = nl2br($this->escapeHtml($e['message']));
-                    $content .= sprintf(<<<'EOF'
-                        <div class="trace trace-as-html">
-                            <table class="trace-details">
-                                <thead class="trace-head"><tr><th>
-                                    <h3 class="trace-class">
-                                        <span class="text-muted">(%d/%d)</span>
-                                        <span class="exception_title">%s</span>
-                                    </h3>
-                                    <p class="break-long-words trace-message">%s</p>
-                                </th></tr></thead>
-                                <tbody>
-EOF
-                        , $ind, $total, $class, $message);
-                    foreach ($e['trace'] as $trace) {
-                        $content .= '<tr><td>';
-                        if ($trace['function']) {
-                            $content .= sprintf('at <span class="trace-class">%s</span><span class="trace-type">%s</span><span class="trace-method">%s</span>(<span class="trace-arguments">%s</span>)', $this->formatClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
-                        }
-                        if (isset($trace['file']) && isset($trace['line'])) {
-                            $content .= $this->formatPath($trace['file'], $trace['line']);
-                        }
-                        $content .= "</td></tr>\n";
-                    }
+        if (!$this->debug) {
+            return <<<EOF
+                <div class="container">
+                    <h1>$title</h1>
+                </div>
+EOF;
+        }
 
-                    $content .= "</tbody>\n</table>\n</div>\n";
-                }
-            } catch (\Exception $e) {
-                // something nasty happened and we cannot throw an exception anymore
-                if ($this->debug) {
-                    $title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($e), $this->escapeHtml($e->getMessage()));
-                } else {
-                    $title = 'Whoops, looks like something went wrong.';
+        $content = '';
+        try {
+            $count = \count($exception->getAllPrevious());
+            $total = $count + 1;
+            foreach ($exception->toArray() as $position => $e) {
+                $ind = $count - $position + 1;
+                $class = $this->formatClass($e['class']);
+                $message = nl2br($this->escapeHtml($e['message']));
+                $content .= sprintf(<<<'EOF'
+                    <div class="trace trace-as-html">
+                        <table class="trace-details">
+                            <thead class="trace-head"><tr><th>
+                                <h3 class="trace-class">
+                                    <span class="text-muted">(%d/%d)</span>
+                                    <span class="exception_title">%s</span>
+                                </h3>
+                                <p class="break-long-words trace-message">%s</p>
+                            </th></tr></thead>
+                            <tbody>
+EOF
+                    , $ind, $total, $class, $message);
+                foreach ($e['trace'] as $trace) {
+                    $content .= '<tr><td>';
+                    if ($trace['function']) {
+                        $content .= sprintf('at <span class="trace-class">%s</span><span class="trace-type">%s</span><span class="trace-method">%s</span>(<span class="trace-arguments">%s</span>)', $this->formatClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
+                    }
+                    if (isset($trace['file']) && isset($trace['line'])) {
+                        $content .= $this->formatPath($trace['file'], $trace['line']);
+                    }
+                    $content .= "</td></tr>\n";
                 }
+
+                $content .= "</tbody>\n</table>\n</div>\n";
+            }
+        } catch (\Exception $e) {
+            // something nasty happened and we cannot throw an exception anymore
+            if ($this->debug) {
+                $title = sprintf('Exception thrown when handling an exception (%s: %s)', \get_class($e), $this->escapeHtml($e->getMessage()));
+            } else {
+                $title = 'Whoops, looks like something went wrong.';
             }
         }
 
@@ -278,6 +284,14 @@ EOF;
      */
     public function getStylesheet(FlattenException $exception)
     {
+        if (!$this->debug) {
+            return <<<'EOF'
+                body { background-color: #fff; color: #222; font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; margin: 0; }
+                .container { margin: 30px; max-width: 600px; }
+                h1 { color: #dc3545; font-size: 24px; }
+EOF;
+        }
+
         return <<<'EOF'
             body { background-color: #F9F9F9; color: #222; font: 14px/1.4 Helvetica, Arial, sans-serif; margin: 0; padding-bottom: 45px; }
 
@@ -362,12 +376,12 @@ EOF;
         }
 
         if (\is_string($fmt)) {
-            $i = strpos($f = $fmt, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: strlen($f);
+            $i = strpos($f = $fmt, '&', max(strrpos($f, '%f'), strrpos($f, '%l'))) ?: \strlen($f);
             $fmt = array(substr($f, 0, $i)) + preg_split('/&([^>]++)>/', substr($f, $i), -1, PREG_SPLIT_DELIM_CAPTURE);
 
             for ($i = 1; isset($fmt[$i]); ++$i) {
                 if (0 === strpos($path, $k = $fmt[$i++])) {
-                    $path = substr_replace($path, $fmt[$i], 0, strlen($k));
+                    $path = substr_replace($path, $fmt[$i], 0, \strlen($k));
                     break;
                 }
             }
@@ -394,7 +408,7 @@ EOF;
             if ('object' === $item[0]) {
                 $formattedValue = sprintf('<em>object</em>(%s)', $this->formatClass($item[1]));
             } elseif ('array' === $item[0]) {
-                $formattedValue = sprintf('<em>array</em>(%s)', is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
+                $formattedValue = sprintf('<em>array</em>(%s)', \is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
             } elseif ('null' === $item[0]) {
                 $formattedValue = '<em>null</em>';
             } elseif ('boolean' === $item[0]) {
@@ -405,7 +419,7 @@ EOF;
                 $formattedValue = str_replace("\n", '', $this->escapeHtml(var_export($item[1], true)));
             }
 
-            $result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $this->escapeHtml($key), $formattedValue);
+            $result[] = \is_int($key) ? $formattedValue : sprintf("'%s' => %s", $this->escapeHtml($key), $formattedValue);
         }
 
         return implode(', ', $result);

FatalErrorHandler/ClassNotFoundFatalErrorHandler.php

@@ -11,11 +11,11 @@
 
 namespace Symfony\Component\Debug\FatalErrorHandler;
 
-use Symfony\Component\Debug\Exception\ClassNotFoundException;
-use Symfony\Component\Debug\Exception\FatalErrorException;
-use Symfony\Component\Debug\DebugClassLoader;
 use Composer\Autoload\ClassLoader as ComposerClassLoader;
 use Symfony\Component\ClassLoader\ClassLoader as SymfonyClassLoader;
+use Symfony\Component\Debug\DebugClassLoader;
+use Symfony\Component\Debug\Exception\ClassNotFoundException;
+use Symfony\Component\Debug\Exception\FatalErrorException;
 
 /**
  * ErrorHandler for classes that do not exist.
@@ -29,9 +29,9 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
      */
     public function handleError(array $error, FatalErrorException $exception)
     {
-        $messageLen = strlen($error['message']);
+        $messageLen = \strlen($error['message']);
         $notFoundSuffix = '\' not found';
-        $notFoundSuffixLen = strlen($notFoundSuffix);
+        $notFoundSuffixLen = \strlen($notFoundSuffix);
         if ($notFoundSuffixLen > $messageLen) {
             return;
         }
@@ -42,7 +42,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
 
         foreach (array('class', 'interface', 'trait') as $typeName) {
             $prefix = ucfirst($typeName).' \'';
-            $prefixLen = strlen($prefix);
+            $prefixLen = \strlen($prefix);
             if (0 !== strpos($error['message'], $prefix)) {
                 continue;
             }
@@ -85,7 +85,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
      */
     private function getClassCandidates($class)
     {
-        if (!is_array($functions = spl_autoload_functions())) {
+        if (!\is_array($functions = spl_autoload_functions())) {
             return array();
         }
 
@@ -93,14 +93,14 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
         $classes = array();
 
         foreach ($functions as $function) {
-            if (!is_array($function)) {
+            if (!\is_array($function)) {
                 continue;
             }
             // get class loaders wrapped by DebugClassLoader
             if ($function[0] instanceof DebugClassLoader) {
                 $function = $function[0]->getClassLoader();
 
-                if (!is_array($function)) {
+                if (!\is_array($function)) {
                     continue;
                 }
             }
@@ -133,7 +133,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
      */
     private function findClassInPath($path, $class, $prefix)
     {
-        if (!$path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path)) {
+        if (!$path = realpath($path.'/'.strtr($prefix, '\\_', '//')) ?: realpath($path.'/'.\dirname(strtr($prefix, '\\_', '//'))) ?: realpath($path)) {
             return array();
         }
 
@@ -159,7 +159,7 @@ class ClassNotFoundFatalErrorHandler implements FatalErrorHandlerInterface
     {
         $candidates = array(
             // namespaced class
-            $namespacedClass = str_replace(array($path.DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file),
+            $namespacedClass = str_replace(array($path.\DIRECTORY_SEPARATOR, '.php', '/'), array('', '', '\\'), $file),
             // namespaced class (with target dir)
             $prefix.$namespacedClass,
             // namespaced class (with target dir and separator)

FatalErrorHandler/UndefinedFunctionFatalErrorHandler.php

@@ -11,8 +11,8 @@
 
 namespace Symfony\Component\Debug\FatalErrorHandler;
 
-use Symfony\Component\Debug\Exception\UndefinedFunctionException;
 use Symfony\Component\Debug\Exception\FatalErrorException;
+use Symfony\Component\Debug\Exception\UndefinedFunctionException;
 
 /**
  * ErrorHandler for undefined functions.
@@ -26,9 +26,9 @@ class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
      */
     public function handleError(array $error, FatalErrorException $exception)
     {
-        $messageLen = strlen($error['message']);
+        $messageLen = \strlen($error['message']);
         $notFoundSuffix = '()';
-        $notFoundSuffixLen = strlen($notFoundSuffix);
+        $notFoundSuffixLen = \strlen($notFoundSuffix);
         if ($notFoundSuffixLen > $messageLen) {
             return;
         }
@@ -38,7 +38,7 @@ class UndefinedFunctionFatalErrorHandler implements FatalErrorHandlerInterface
         }
 
         $prefix = 'Call to undefined function ';
-        $prefixLen = strlen($prefix);
+        $prefixLen = \strlen($prefix);
         if (0 !== strpos($error['message'], $prefix)) {
             return;
         }

FatalErrorHandler/UndefinedMethodFatalErrorHandler.php

@@ -44,7 +44,7 @@ class UndefinedMethodFatalErrorHandler implements FatalErrorHandlerInterface
         $candidates = array();
         foreach ($methods as $definedMethodName) {
             $lev = levenshtein($methodName, $definedMethodName);
-            if ($lev <= strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
+            if ($lev <= \strlen($methodName) / 3 || false !== strpos($definedMethodName, $methodName)) {
                 $candidates[] = $definedMethodName;
             }
         }

Resources/ext/tests/003.phpt

@@ -45,7 +45,7 @@ function foo()
 $handler = ErrorHandler::register();
 $handler->setExceptionHandler('print_r');
 
-if (function_exists('xdebug_disable')) {
+if (\function_exists('xdebug_disable')) {
     xdebug_disable();
 }
 

Tests/ErrorHandlerTest.php

@@ -524,7 +524,7 @@ class ErrorHandlerTest extends TestCase
 
         $handler = new ErrorHandler();
         $handler->setExceptionHandler(function () use (&$args) {
-            $args = func_get_args();
+            $args = \func_get_args();
         });
 
         $handler->handleException($exception);
@@ -562,7 +562,7 @@ class ErrorHandlerTest extends TestCase
                 'backtrace' => array(456),
             );
 
-            call_user_func_array(array($handler, 'handleError'), $error);
+            \call_user_func_array(array($handler, 'handleError'), $error);
             $handler->handleFatalError($error);
         } finally {
             restore_error_handler();

Tests/Exception/FlattenExceptionTest.php

@@ -14,19 +14,19 @@ namespace Symfony\Component\Debug\Tests\Exception;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Debug\Exception\FlattenException;
 use Symfony\Component\HttpFoundation\Exception\SuspiciousOperationException;
-use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
-use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
-use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;
-use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
-use Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException;
-use Symfony\Component\HttpKernel\Exception\ConflictHttpException;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
+use Symfony\Component\HttpKernel\Exception\ConflictHttpException;
 use Symfony\Component\HttpKernel\Exception\GoneHttpException;
 use Symfony\Component\HttpKernel\Exception\LengthRequiredHttpException;
+use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
+use Symfony\Component\HttpKernel\Exception\NotAcceptableHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpKernel\Exception\PreconditionFailedHttpException;
 use Symfony\Component\HttpKernel\Exception\PreconditionRequiredHttpException;
 use Symfony\Component\HttpKernel\Exception\ServiceUnavailableHttpException;
 use Symfony\Component\HttpKernel\Exception\TooManyRequestsHttpException;
+use Symfony\Component\HttpKernel\Exception\UnauthorizedHttpException;
 use Symfony\Component\HttpKernel\Exception\UnsupportedMediaTypeHttpException;
 
 class FlattenExceptionTest extends TestCase
@@ -236,7 +236,7 @@ class FlattenExceptionTest extends TestCase
         $this->assertSame(array('object', 'stdClass'), $array[$i++]);
         $this->assertSame(array('object', 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException'), $array[$i++]);
         $this->assertSame(array('incomplete-object', 'BogusTestClass'), $array[$i++]);
-        $this->assertSame(array('resource', defined('HHVM_VERSION') ? 'Directory' : 'stream'), $array[$i++]);
+        $this->assertSame(array('resource', \defined('HHVM_VERSION') ? 'Directory' : 'stream'), $array[$i++]);
         $this->assertSame(array('resource', 'stream'), $array[$i++]);
 
         $args = $array[$i++];

Tests/ExceptionHandlerTest.php

@@ -12,10 +12,10 @@
 namespace Symfony\Component\Debug\Tests;
 
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\Debug\ExceptionHandler;
 use Symfony\Component\Debug\Exception\OutOfMemoryException;
-use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
+use Symfony\Component\Debug\ExceptionHandler;
 use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 require_once __DIR__.'/HeaderMock.php';
 

Tests/FatalErrorHandler/ClassNotFoundFatalErrorHandlerTest.php

@@ -11,18 +11,18 @@
 
 namespace Symfony\Component\Debug\Tests\FatalErrorHandler;
 
+use Composer\Autoload\ClassLoader as ComposerClassLoader;
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\Debug\DebugClassLoader;
 use Symfony\Component\Debug\Exception\FatalErrorException;
 use Symfony\Component\Debug\FatalErrorHandler\ClassNotFoundFatalErrorHandler;
-use Symfony\Component\Debug\DebugClassLoader;
-use Composer\Autoload\ClassLoader as ComposerClassLoader;
 
 class ClassNotFoundFatalErrorHandlerTest extends TestCase
 {
     public static function setUpBeforeClass()
     {
         foreach (spl_autoload_functions() as $function) {
-            if (!is_array($function)) {
+            if (!\is_array($function)) {
                 continue;
             }
 
@@ -32,7 +32,7 @@ class ClassNotFoundFatalErrorHandlerTest extends TestCase
             }
 
             if ($function[0] instanceof ComposerClassLoader) {
-                $function[0]->add('Symfony_Component_Debug_Tests_Fixtures', dirname(dirname(dirname(dirname(dirname(__DIR__))))));
+                $function[0]->add('Symfony_Component_Debug_Tests_Fixtures', \dirname(\dirname(\dirname(\dirname(\dirname(__DIR__))))));
                 break;
             }
         }

Tests/HeaderMock.php

@@ -27,12 +27,12 @@ function testHeader()
 {
     static $headers = array();
 
-    if (!$h = func_get_args()) {
+    if (!$h = \func_get_args()) {
         $h = $headers;
         $headers = array();
 
         return $h;
     }
 
-    $headers[] = func_get_args();
+    $headers[] = \func_get_args();
 }

Tests/phpt/debug_class_loader.phpt

@@ -9,7 +9,7 @@ use Symfony\Component\Debug\DebugClassLoader;
 
 $vendor = __DIR__;
 while (!file_exists($vendor.'/vendor')) {
-    $vendor = dirname($vendor);
+    $vendor = \dirname($vendor);
 }
 require $vendor.'/vendor/autoload.php';
 

Tests/phpt/decorate_exception_hander.phpt

@@ -7,7 +7,7 @@ namespace Symfony\Component\Debug;
 
 $vendor = __DIR__;
 while (!file_exists($vendor.'/vendor')) {
-    $vendor = dirname($vendor);
+    $vendor = \dirname($vendor);
 }
 require $vendor.'/vendor/autoload.php';
 

Tests/phpt/exception_rethrown.phpt

@@ -7,7 +7,7 @@ namespace Symfony\Component\Debug;
 
 $vendor = __DIR__;
 while (!file_exists($vendor.'/vendor')) {
-    $vendor = dirname($vendor);
+    $vendor = \dirname($vendor);
 }
 require $vendor.'/vendor/autoload.php';
 

Tests/phpt/fatal_with_nested_handlers.phpt

@@ -7,7 +7,7 @@ namespace Symfony\Component\Debug;
 
 $vendor = __DIR__;
 while (!file_exists($vendor.'/vendor')) {
-    $vendor = dirname($vendor);
+    $vendor = \dirname($vendor);
 }
 require $vendor.'/vendor/autoload.php';