diff --git a/Zend/tests/concat_003.phpt b/Zend/tests/concat_003.phpt
index 53d8d2f9a4b..13c6fdc087b 100644
--- a/Zend/tests/concat_003.phpt
+++ b/Zend/tests/concat_003.phpt
@@ -2,37 +2,24 @@
 Concatenating many small strings should not slowdown allocations
 --SKIPIF--
 <?php if (PHP_DEBUG) { die ("skip debug version is slow"); } ?>
---INI--
-memory_limit=256m
 --FILE--
 <?php
 
-/* To note is that memory usage can vary depending on whether opcache is on. The actual
-  measuring that matters is timing here. */
-
 $time = microtime(TRUE);
 
 /* This might vary on Linux/Windows, so the worst case and also count in slow machines. */
-$t0_max = 0.3;
-$t1_max = 1.0;
+$t_max = 1.0;
 
-$datas = [];
-for ($i = 0; $i < 220000; $i++)
-{
-    $datas[] = [
-        '000.000.000.000',
-        '000.255.255.255',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-        '保留地址',
-    ];
-}
-
-$t0 = microtime(TRUE) - $time;
-var_dump($t0 < $t0_max);
+$datas = array_fill(0, 220000, [
+    '000.000.000.000',
+    '000.255.255.255',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+    '保留地址',
+]);
 
 $time = microtime(TRUE);
 $texts = '';
@@ -41,12 +28,11 @@ foreach ($datas AS $data)
     $texts .= implode("\t", $data) . "\r\n";
 }
 
-$t1 = microtime(TRUE) - $time;
-var_dump($t1 < $t1_max);
+$t = microtime(TRUE) - $time;
+var_dump($t < $t_max);
 
 ?>
 +++DONE+++
 --EXPECT--
 bool(true)
-bool(true)
 +++DONE+++
diff --git a/ext/opcache/tests/php_cli_server.inc b/ext/opcache/tests/php_cli_server.inc
index 0878bfafc0d..ca6854f5536 100644
--- a/ext/opcache/tests/php_cli_server.inc
+++ b/ext/opcache/tests/php_cli_server.inc
@@ -20,28 +20,43 @@ function php_cli_server_start($ini = "") {
 		$cmd = "exec {$php_executable} -t {$doc_root} $ini -S " . PHP_CLI_SERVER_ADDRESS . " 2>/dev/null";
 		$handle = proc_open($cmd, $descriptorspec, $pipes, $doc_root);
 	}
-	
+
 	// note: even when server prints 'Listening on localhost:8964...Press Ctrl-C to quit.'
 	//       it might not be listening yet...need to wait until fsockopen() call returns
-    $i = 0;
-    while (($i++ < 30) && !($fp = @fsockopen(PHP_CLI_SERVER_HOSTNAME, PHP_CLI_SERVER_PORT))) {
-        usleep(10000);
-    }
+	$error = "Unable to connect to servers\n";
+	for ($i=0; $i < 60; $i++) {
+		usleep(25000); // 25ms per try
+		$status = proc_get_status($handle);
+		$fp = @fsockopen(PHP_CLI_SERVER_HOSTNAME, PHP_CLI_SERVER_PORT);
+		// Failure, the server is no longer running
+		if (!($status && $status['running'])) {
+			$error = "Server is not running\n";
+			break;
+		}
+		// Success, Connected to servers
+		if ($fp) {
+			$error = '';
+			break;
+		}
+	}
 
-    if ($fp) {
-        fclose($fp);
-    }
+	if ($fp) {
+		fclose($fp);
+	}
+
+	if ($error) {
+		echo $error;
+		proc_terminate($handle);
+		exit(1);
+	}
 
 	register_shutdown_function(
 		function($handle) {
 			proc_terminate($handle);
 		},
-			$handle
-		);
-	// don't bother sleeping, server is already up
-	// server can take a variable amount of time to be up, so just sleeping a guessed amount of time
-	// does not work. this is why tests sometimes pass and sometimes fail. to get a reliable pass
-	// sleeping doesn't work.
+		$handle
+	);
+
 }
 ?>
 
diff --git a/ext/openssl/tests/openssl_pkey_new_basic.phpt b/ext/openssl/tests/openssl_pkey_new_basic.phpt
index eee2eb0a0e8..b73b1f580cf 100644
--- a/ext/openssl/tests/openssl_pkey_new_basic.phpt
+++ b/ext/openssl/tests/openssl_pkey_new_basic.phpt
@@ -86,10 +86,10 @@ $details = openssl_pkey_get_details($dh);
 $dh_details = $details['dh'];
 openssl_pkey_test_cmp($phex, $dh_details['p']);
 var_dump($dh_details['g']);
-var_dump(strlen($dh_details['pub_key']) > 0);
-var_dump(strlen($dh_details['priv_key']) > 0);
+var_dump(strlen($dh_details['pub_key']));
+var_dump(strlen($dh_details['priv_key']));
 ?>
---EXPECT--
+--EXPECTF--
 int(0)
 int(0)
 int(0)
@@ -98,9 +98,9 @@ int(0)
 int(0)
 int(0)
 int(0)
-int(20)
-int(128)
+int(%d)
+int(%d)
 int(0)
 string(1) "2"
-bool(true)
-bool(true)
+int(%d)
+int(%d)