3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = 'A B C ()'; $str = preg_replace(\s[^a-zA-Z], '_', $str);
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.26
Parse error: syntax error, unexpected '[' in /in/VSorB on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/VSorB on line 3 Parse error: syntax error, unexpected '[' in /in/VSorB on line 3
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, 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/VSorB on line 3 Parse error: parse error, unexpected '[' in /in/VSorB on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/VSorB on line 3 Parse error: parse error in /in/VSorB on line 3
Process exited with code 255.

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