&reftitle.runtime; &extension.runtime; Name Default Changeable error_reporting E_ALL & ~E_NOTICE PHP_INI_ALL display_errors "1" PHP_INI_ALL display_startup_errors "0" PHP_INI_ALL log_errors "0" PHP_INI_ALL log_errors_max_len "1024" PHP_INI_ALL ignore_repeated_errors "0" PHP_INI_ALL ignore_repeated_source "0" PHP_INI_ALL report_memleaks "1" PHP_INI_SYSTEM track_errors "0" PHP_INI_ALL html_errors "1" PHP_INI_ALL docref_root "http://www.php.net/" PHP_INI_ALL docref_ext ".html" PHP_INI_ALL error_prepend_string NULL PHP_INI_ALL error_append_string NULL PHP_INI_ALL error_log NULL PHP_INI_ALL warn_plus_overloading NULL PHP_INI?? For further details and definition of the PHP_INI_* constants see ini_set. Here is a short explanation of the configuration directives. error_reporting integer Set the error reporting level. The parameter is either an integer representing a bit field, or named constants. The error_reporting levels and constants are described in Predefined Constants, and in &php.ini;. To set at runtime, use the error_reporting function. See also the display_errors directive. In PHP 4 the default value does not show E_NOTICE level errors. You may want to show them during development. Enabling E_NOTICE during development has some benefits. For debugging purposes: NOTICE messages will warn you about possibls bugs in your code. For example, use of unassigned values are warned. It is extremely useful to find typos and to save time for debugging. NOTICE messages will warn you about bad style. For example, $arr[item] is better to be written as $arr['item'] since PHP tries to treat "item" as constant. If it is not a constant, PHP assumes it is a string index for the array. In PHP 3, the default setting is (E_ERROR | E_WARNING | E_PARSE), meaning the same thing. Note, however, that since constants are not supported in PHP 3's php3.ini, the error_reporting setting there must be numeric; hence, it is 7. display_errors boolean This determines whether errors should be printed to the screen as part of the HTML output or not. display_startup_errors boolean Even when display_errors is on, errors that occur during PHP's startup sequence are not displayed. It's strongly recommended to keep display_startup_errors off, except for debugging. log_errors boolean Tells whether script error messages should be logged to the server's error log or error_log. This option is thus server-specific. You're strongly advised to use error logging in place of error displaying on production web sites. log_errors_max_len integer Set the maximum length of log_errors in kbytes. In error_log information about the source is added. The default is 1024 and 0 allows to not apply any maximum length at all. ignore_repeated_errors boolean Do not log repeated messages. Repeated errors must occur in the same file on the same line until ignore_repeated_source is set true. ignore_repeated_source boolean Ignore source of message when ignoring repeated messages. When this setting is On you will not log errors with repeated messages from different files or sourcelines. report_memleaks boolean If this parameter is set to Off, then memory leaks will not be shown (on stdout or in the log). This has only effect in a debug compile, and if error_reporting includes E_WARNING in the allowed list track_errors boolean If enabled, the last error message will always be present in the variable $php_errormsg. html_errors boolean Turn off HTML tags in error messages. The new format for html errors produces clickable messages that direct the user to a page describing the error or function in causing the error. These references are affected by docref_root and docref_ext. docref_root string The new error format contains a reference to a page describing the error or function in causing the error. In case of manual pages you can download the manual in your language and set this ini directive to the url of your local copy. If your local copy of the manual can be reached by '/manual/' you can simply use docref_root=/manual/. Additional you have to set docref_ext to match the fileextensions of your copy docref_ext=.html. It is possible to use external references. For example you can use docref_root=http://manual/en/ or docref_root="http://landonize.it/?how=url&theme=classic&filter=Landon&url=http%3A%2F%2Fwww.php.net%2F" Most of the time you want the docref_root value to end with a slash '/'. But see the second example above which does not have nor need it. docref_ext string See docref_root. The value of docref_ext must begin with a dot '.'. error_prepend_string string String to output before an error message. error_append_string string String to output after an error message. error_log string Name of the file where script errors should be logged. If the special value syslog is used, the errors are sent to the system logger instead. On UNIX, this means syslog(3) and on Windows NT it means the event log. The system logger is not supported on Windows 95. See also: syslog. warn_plus_overloading boolean If enabled, this option makes PHP output a warning when the plus (+) operator is used on strings. This is to make it easier to find scripts that need to be rewritten to using the string concatenator instead (.).