A function of generating random numbers in PHP

function Randomkeys ($length) { $pattern = ' 1234567890abcdefghijklmnopqrstuvwxyz Abcdefghijklomnopqrstuvwxyz,./&l t;>?; #:@~[]{}-_=+) (*&^%___fckpd___0pound; "!"; Character descriptors for ($i =0; $i < $length; $i + +) { $key. = $pattern {Mt_rand (0,35)}; Generate PHP Random number } return $key; } Echo Randomkeys (8); This PHP random function can generate xc*=z~7l such a string, enough random! Here's another way to generate random numbers with PHP: Use the Chr () function to eliminate the steps of creating a descriptors. function Randomkeys ($length) { $output = "; for ($a = 0; $a < $length; $a + +) { $output. = Chr (Mt_rand (33, 126)); Generate PHP Random number } return $output; } Echo Randomkeys (8); ?> Copy CodeNote: In the second PHP random function, use Mt_rand () to generate a PHP random number between 33 and 126, and then use the Chr () function to convert to characters. Looking at the ASCII code table, you will find that 33 to 126 represents all the characters of the character Fu Chili in the first function. The second function is functionally identical to the first function and is more concise.

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