3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $res = ""; $heart = "love"; $pat = "[♥]+"; $sub = "heart"; $code = mb_ereg_replace( $pat, $sub, "I \$♥ PHP" ); eval("\$code = \"$code\";"); echo $code;
based on u0Emc
Output for 5.0.0 - 5.2.17, 5.6.8 - 7.1.0
I love PHP
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.5.35
Warning: mb_ereg_replace(): mbregex compile err: premature end of char-class in /in/RDK6g on line 6
Output for 5.3.29

Process exited with code 143.
Output for 4.3.4 - 4.4.9
Warning: mb_ereg_replace(): mbregex compile err: premature end of regular expression in /in/RDK6g on line 6
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_ereg_replace() in /in/RDK6g on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mb_ereg_replace() in /in/RDK6g on line 6