3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = 'abcABC123DEF' $value = preg_replace_callback('/([A-Z])/', '$1 ', $value); var_dump($value);
Output for 5.4.0 - 5.4.22
Parse error: syntax error, unexpected '$value' (T_VARIABLE) in /in/YqR1O on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_VARIABLE in /in/YqR1O on line 3
Process exited with code 255.
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176.47 ms | 1395 KiB | 58 Q