3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = 'Hello world'; $arr = array(2, 4, 8); doFoo($arr); echo '<pre>'; print_r($arr); echo '<pre>'; echo $foo; function doFoo(&$array) { foreach ($array as &$foo) { $foo += 1; echo '<pre>' . $foo . '</pre>'; } } var_dump($arr); ?>
Output for 5.2.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
<pre>3</pre><pre>5</pre><pre>9</pre><pre>Array ( [0] => 3 [1] => 5 [2] => 9 ) <pre>Hello worldarray(3) { [0]=> int(3) [1]=> int(5) [2]=> int(9) }
Output for 5.0.0 - 5.2.0
<pre>3</pre><pre>5</pre><pre>9</pre><pre>Array ( [0] => 3 [1] => 5 [2] => 9 ) <pre>Hello worldarray(3) { [0]=> &int(3) [1]=> &int(5) [2]=> int(9) }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/gBOHS on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/gBOHS on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/gBOHS on line 12
Process exited with code 255.