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run code in 150+ php & hhvm versions
Bugs & Features
<?php $heart = "love"; $pat = "[♥]+"; $sub = "heart"; $code = mb_ereg_replace( $pat, $sub, "I \$♥ PHP" ); eval("$code = \"$code\""); echo $code;
based on 6YMLX
Output for 7.0.0 - 7.1.0
Parse error: syntax error, unexpected '$heart' (T_VARIABLE) in /in/l6O8M(7) : eval()'d code on line 1
Process exited with code 255.
Output for hhvm-3.12.0
Warning: mbregex compile err: premature end of char-class in /in/l6O8M on line 6 Fatal error: syntax error, unexpected '=', expecting $end in /in/l6O8M(7)(35876b2b5274b660b7455383c33e7431) : eval()'d code on line 1
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.6.7 - 5.6.28
Parse error: syntax error, unexpected '$heart' (T_VARIABLE) in /in/l6O8M(7) : eval()'d code on line 1 I $heart PHP
Output for 5.4.11 - 5.5.35
Warning: mb_ereg_replace(): mbregex compile err: premature end of char-class in /in/l6O8M on line 6 Parse error: syntax error, unexpected '=' in /in/l6O8M(7) : eval()'d code on line 1
Output for 5.3.0 - 5.4.10
Warning: mb_ereg_replace(): mbregex compile err: premature end of char-class in /in/l6O8M on line 6 Parse error: syntax error, unexpected '=' in /in/l6O8M(7) : eval()'d code on line 1
Process exited with code 255.
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_VARIABLE in /in/l6O8M(7) : eval()'d code on line 1 I $heart PHP
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_VARIABLE in /in/l6O8M(7) : eval()'d code on line 1 I $heart PHP
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: mb_ereg_replace(): mbregex compile err: premature end of regular expression in /in/l6O8M on line 6 Parse error: syntax error, unexpected '=' in /in/l6O8M(7) : eval()'d code on line 1
Process exited with code 255.
Output for 4.3.5 - 4.4.1
Warning: mb_ereg_replace(): mbregex compile err: premature end of regular expression in /in/l6O8M on line 6 Parse error: parse error, unexpected '=' in /in/l6O8M(7) : eval()'d code on line 1
Process exited with code 255.
Output for 4.3.4
Warning: mb_ereg_replace(): mbregex compile err: premature end of regular expression in /in/l6O8M on line 6 Parse error: parse error in /in/l6O8M(7) : eval()'d code on line 1
Process exited with code 255.
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_ereg_replace() in /in/l6O8M 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/l6O8M on line 6