3v4l.org

run code in 300+ PHP versions simultaneously
<?php $♥  = "love"; $pat = "[♥]+"; $sub = "heart"; $code = mb_ereg_replace( $pat, $sub, "I $♥ PHP" ); var_dump( $code ); // I $heart PHP - [ PHP5+; not 5.3-5.5 ] echo $code;                // I love PHP 
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected end of file in /in/SAvFW on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28
Parse error: syntax error, unexpected $end in /in/SAvFW on line 8
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/SAvFW on line 8
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
Parse error: parse error, unexpected $ in /in/SAvFW on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/SAvFW on line 8
Process exited with code 255.

preferences:
207.41 ms | 1394 KiB | 121 Q