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run code in 200+ php & hhvm versions
Bugs & Features
<?php $text = 'El méu tëst'; $text = preg_replace('~[^ \\pL\d]+~u', '-', $text); var_dump( $text );
based on G2HfS
Output for 4.4.0 - 4.4.9, 5.0.5 - 7.2.0
string(13) "El méu tëst"
Output for 4.3.11, 5.0.0 - 5.0.4
Warning: preg_replace(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 4 in /in/P2LTd on line 5 NULL
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 4 in /in/P2LTd on line 5 NULL