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<?php $sep = "long string"; $text = "blablablablablablablabla-long strin"; $last = $text[strlen($text) -1]; $offset = 0; while (($pos = strpos($sep, $last, $offset)) !== false) { $subsep = substr($sep, 0, $pos + 1); $sublen = strlen($subsep); if (substr_compare($text, $subsep, -$sublen) === 0) { echo substr($text, 0, -$sublen); break; } $offset = $pos + 1; }
Output for git.master, git.master_jit, rfc.property-hooks
blablablablablablablabla-

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