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<?php $subject = ['1']; $pattern = '/\d/'; $replace = '$0'; var_export(preg_filter($pattern, $replace, $subject)); echo "\n---\n"; $result = preg_replace($pattern, $replace, $subject); $preg_filter_similar = array_diff($result, $subject); var_export($preg_filter_similar);
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '1', ) --- array ( )

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