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run code in 300+ PHP versions simultaneously
<?PHP const pattern = "#\{(?:(?<name>\w+))(?:/\}|\}(?<snippet>(?:[^{]*|(?!\{\w+:\})|(?R))*)\{end\})#mu"; $ss = <<<'EOD' {first} {second}within second{end} {end} EOD; function testRun($input ){ echo $input[0]; echo PHP_EOL; } preg_replace_callback( pattern ,'testRun',$ss);
Output for git.master, git.master_jit, rfc.property-hooks
{first} {second}within second{end} {end}

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