<?php $lookup = [ 'Name' => 'Joseph', 'Name_en' => 'Joe', 'Name_es' => 'Jose', '19' => 'age', '2019' => 'year', '20' => 'next birthday', ]; $str = "Name : Name_en, outlier 2019 19 20"; echo preg_replace_callback( "#\b\w+\b#", fn($m) => $lookup[$m[0]] ?? $m[0], $str );
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