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<?php $cadena = 'Álvaro / Re-quena'; $patrón = '/[^a-zA-ZñÑ\s]/i'; $sustitución = ''; echo mb_preg_replace($patrón, $sustitución, $cadena);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function mb_preg_replace() in /in/mqruC:6 Stack trace: #0 {main} thrown in /in/mqruC on line 6
Process exited with code 255.

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