<?php $s = "ab"; $s1 = "cAbfabe"; $out = $s1; do { $out = stristr($out,$s); echo "out: $out\n"; $s3 = substr($out,0,count($s)+1); $s1 = str_replace($s3,"<$s3>",$s1); echo "s3: $s3\n"; $out = substr($out,count($s)+1); echo "out: $out\n"; echo "=======\n"; } while ($out != false); echo "s1: $s1\n";
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