php将字符串随机分割成不同长度数组的方法

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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.

)

*/