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run code in 150+ php & hhvm versions
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<?php $a = "this is sachinĂ¹s school of sachin"; $pattern = "sach"; if(preg_match("/[:alpha:]*".$pattern."([:alpha:]*)/", $a, $match)) print(strlen($match[1])); ?>
Output for 4.3.11 - 5.6.28, 7.0.0 - 7.1.0
Warning: preg_match(): Compilation failed: POSIX named classes are supported only within a class at offset 0 in /in/1nOXG on line 4
Output for 4.3.0 - 4.3.10, hhvm-3.10.0 - 3.12.0
Warning: Compilation failed: POSIX named classes are supported only within a class at offset 0 in /in/1nOXG on line 4