3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $pat = "[♥]+"; $sub = "heart"; echo mb_ereg_replace( $pat, $sub, "I \$♥ PHP" );
based on ZegKg
Output for 5.0.0 - 5.2.17, 5.6.8 - 5.6.28, 7.0.0 - 7.1.0
I $heart PHP
Output for hhvm-3.10.0 - 3.12.0
Warning: mbregex compile err: premature end of char-class in /in/X3rXU on line 5
Output for 5.3.0 - 5.5.35
Warning: mb_ereg_replace(): mbregex compile err: premature end of char-class in /in/X3rXU on line 5
Output for 4.3.4 - 4.4.9
Warning: mb_ereg_replace(): mbregex compile err: premature end of regular expression in /in/X3rXU on line 5
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_ereg_replace() in /in/X3rXU on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mb_ereg_replace() in /in/X3rXU on line 5