//办法1function strpos1($str,$str_find){ $a = str_split($str); $b = str_split($str_find); foreach ($a as $ka=>$va) { if ($va==$str_find[0]) { $match=true; //循环看看后几个是否相等 $len = count($b); for ($i=0;$i<$len;$i++) { if ($a[$ka+$i]!==$b[$i]){ $match = false; } } } if ($match) { $res=$ka; break; } } return $res;}//办法2