3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array( 'tes1' => array(1, 2, 3), 'tes2' => array(2, 3, 4), ); $arr2 = $arr1; foreach($arr2 as &$item2) { $item2 = implode('+', $item2); } var_export($arr1); var_export($arr2);
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array ( 'tes1' => array ( 0 => 1, 1 => 2, 2 => 3, ), 'tes2' => array ( 0 => 2, 1 => 3, 2 => 4, ), )array ( 'tes1' => '1+2+3', 'tes2' => '2+3+4', )
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected '&', expecting T_VARIABLE or '$' in <b>/in/ktErh</b> on line <b>8</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected '&', expecting T_VARIABLE or '$' in <b>/in/ktErh</b> on line <b>8</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_VARIABLE' or `'$'' in <b>/in/ktErh</b> on line <b>8</b><br />
Process exited with code 255.
preferences:
242.69 ms | 401 KiB | 390 Q