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<?php $row["height"] = '(163 cm)'; $string= $row['height']; $pos1 = strpos($string, "("); $pos2 = strpos($string, "cm", $pos1); $text = substr($string,$pos1+1,$pos2-2+$pos1); echo $text; ?>
Output for git.master, git.master_jit, rfc.property-hooks
163

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