PHP generates random numbers, letters or mixed strings of numbers and letters

This time I will bring you php to generate a random number, letter or mixed string of numbers and letters, php to generate a random number, letter or mixed string of numbers and lettersNotes What are they? Here are actual cases. Let’s take a look.

php generates a random string, you can specify whether it is pure numbers, pure letters or a mixture.

Example, you can specify a random string of length.

<?php
//生成随机字符串
function rand_zifu($what,$number){ 
$
string
=&#39;&#39;; 
for($i = 1; $i <= $number; $i++){ 
//混合 
$panduan=1; 
if($what == 3){ 
if(rand(1,2)==1){ 
$what=1; 
}else{ 
$what=2; 
} 
$panduan=2; 
}
//数字 
if($what==1){ 
$string.=rand(0,9); 
}elseif($what==2){ 
//字母 
$rand=rand(0,24); 
$b=&#39;a&#39;; 
for($a =0;$a <=$rand;$a++){ 
$b++; 
} 
$string.=$b; 
} 
if($panduan==2)$what=3; 
} 
return $string; 
} 
echo rand_zifu(3,10);

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to the php Chinese website Other related articles!

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