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run code in 150+ php & hhvm versions
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<?php /* <_link>user://1|Team GB <a href="user/1">Team GB</a> <_link>tag://FridayBeers|#FridayBeers <a href="tags/FridayBeers">#FridayBeers</a> */ $pattern = "~\<_link\>((user)\://(?<userId>\d+)|(tag)\://(?<tagLink>[a-zA-Z]+\|#(?<tagTitle>[a-zA-Z]+)~"; $string = "<_link>user://1|Team GB and <_link>tag://FridayBeers|#FridayBeers"; preg_replace_callback($pattern, $string, function() use ($match) { var_dump($match); });
Output for 7.1.0
Notice: Undefined variable: match in /in/v2so2 on line 14 Warning: preg_replace_callback(): Requires argument 2, '<_link>user://1|Team GB and <_link>tag://FridayBeers|#FridayBeers', to be a valid callback in /in/v2so2 on line 16 Recoverable fatal error: Object of class Closure could not be converted to string in /in/v2so2 on line 16
Process exited with code 255.
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.0.14
Notice: Undefined variable: match in /in/v2so2 on line 14 Warning: preg_replace_callback(): Requires argument 2, '<_link>user://1|Team GB and <_link>tag://FridayBeers|#FridayBeers', to be a valid callback in /in/v2so2 on line 16
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: match in /in/v2so2 on line 16 Warning: Not a valid callback function <_link>user://1|Team GB and <_link>tag://FridayBeers|#FridayBeers in /in/v2so2 on line 16
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/v2so2 on line 14
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/v2so2 on line 14
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/v2so2 on line 14
Process exited with code 255.