php将字符串随机分割成不同长度数组的方法

本文实例讲述了php将字符串随机分割成不同长度数组的方法。分享给大家供大家参考。具体分析如下：

这里使用php对字符串在指定的长度范围内进行随机分割，把分割后的结果存在数组里面

    function RandomSplit($min, $max, $str){
      $a = array();
      while ($str != ''){
        $p = rand($min, $max);
        $p = ($p > strlen($str)) ? strlen($str) : $p;
        $buffer = substr($str, 0, $p);
        $str = substr($str, $p, strlen($str)-$p);
        $a[] = $buffer;
      }
      return $a;
    }
    //范例：
    /*
    ** Example:
    */
    $test_string = 'This is a example to test the RandomSplit function.';
    print_r(RandomSplit(1, 7, $test_string));
    /*
    Outputs something like this
    (Array items are 1 to 7 characters long): 
    Array
    (
      [0] => This
      [1] => is
      [2] => a exam
      [3] => ple to
      [4] => test t
      [5] => he
      [6] => 
      [7] => ran
      [8] => d_spl
      [9] => it f
      [10] => un
      [11] => ction.
    )
    */

希望本文所述对大家的php程序设计有所帮助。