$str="frgragtfri hjdfg 356jfdgep fg,erfer,fgbrfgve";
echo strpos($str,'hi');
var_dump(strpos($str,356)); //沒有找到 返回false
var_dump(strpos($str,97)); //返回5 97被當做ASCII碼中的a
在計算機中,ASCII字符集中,65-》90,A-Z;97-》122,a-z
$str="frgragtfri hjdfg 356jfdgep fg,erfer,fgbrfgve";
echo strpos($str,'hi');
var_dump(strpos($str,356)); //沒有找到 返回false
var_dump(strpos($str,97)); //返回5 97被當做ASCII碼中的a
在計算機中,ASCII字符集中,65-》90,A-Z;97-》122,a-z