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<?php $teste = 'sfgsdfgsdfgsdgf</body>'; $pos = strpos($teste, '</body>'); if ($pos !== false) { $html = substr($teste, 0, $pos); var_dump($html . 'TESTETESTE' . substr($teste, $pos)); }
Output for 4.3.0 - 7.1.10
string(32) "sfgsdfgsdfgsdgfTESTETESTE</body>"