本文实例为大家分享了PHP生出随机字符串的具体代码，供大家参考，具体内容如下
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function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0,strlen($characters) - 1)];
}
return $randomString;
}
echo generateRandomString(20);
/**
- 随机生成字符串
- @param int $length
- @return null|string
*/
private static function getRandChar($length = 8){
$str = null;
$strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
$max = strlen($strPol)-1;
for($i=0;$i<$length;$i++){
$str.=$strPol[rand(0,$max)]; //rand($min,$max)生成介于min和max两个数之间的一个随机整数
}
return $str;
}
