PHP randomly generates string examples to explain

This article mainly introduces the method of generating random strings in PHP in detail. It has certain reference value. Interested friends can refer to it.

The example of this article is to share with you the method of generating random strings in PHP. The specific code of the string is for your reference. The specific content is as follows

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;
}

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