此代码将创建一个可阅读的字符串，使其更接近词典中的单词，实用且具有密码验证功能。

 
/************** 
*@length - length of random string (must be a multiple of 2) 
**************/ 
function readable_random_string($length = 6){ 
$conso=array("b","c","d","f","g","h","j","k","l", 
"m","n","p","r","s","t","v","w","x","y","z"); 
$vocal=array("a","e","i","o","u"); 
$password=""; 
srand ((double)microtime()*1000000); 
$max = $length/2; 
for($i=1; $i<=$max; $i++) 
{ 
$password.=$conso[rand(0,19)]; 
$password.=$vocal[rand(0,4)]; 
} 
return $password; 
} 

这里是摘自脚本之家之前发布的文章。更多的技巧可以参考。
收集的二十一个实用便利的PHP函数代码