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<?php function zerofill($mStretch, $iLength = 2) { $sPrintfString = '%s%0' . (int)$iLength . 's'; return sprintf($sPrintfString, $mStretch, "\0"); } var_dump(zerofill("asd", 10));
Output for 4.3.0 - 7.2.0
string(13) "asd000000000"