3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pat    =  "[♥]+"; $sub    =  "heart"; $code   = "I \$♥ PHP"; $code   =  mb_ereg_replace( $pat, $sub, $code ); var_dump( $code );   
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected '"[♥]+"' (T_CONSTANT_ENCAPSED_STRING) in /in/NOkKn on line 2
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, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/NOkKn on line 2
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 T_CONSTANT_ENCAPSED_STRING in /in/NOkKn on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/NOkKn on line 2
Process exited with code 255.
preferences:
200.85 ms | 1394 KiB | 123 Q