php指定长度分割字符串str_split函数用法示例

$str = 'abcdefgh';$arr = str_split($str,2);

array(4) { [0]=> string(2) "ab" [1]=> string(2) "cd" [2]=> string(2) "ef" [3]=> string(2) "gh"}

$str = 'abcdefgh';$arr = str_split($str);$i = 0;$limit = 3;$num = count($arr);while($i <= $num-1){  $temp = array();  $for_countbu = ($num-$i) >= $limit ? $limit : $num - $i;  for($j = 0; $j < $for_countbu; ++$j)  {    $temp[] = $arr[$i];    ++$i;  }  $one = implode('',$temp);  $result[] = $one;}print_r($result);

array(4) { [0]=> string(2) "ab" [1]=> string(2) "cd" [2]=> string(2) "ef" [3]=> string(2) "gh"}