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date-poll-api/src/Traits/RandomTrait.php

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<?php
namespace App\Traits;
trait RandomTrait {
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public function generateRandomKey() {
$rand = random_int( PHP_INT_MIN, PHP_INT_MAX );
return str_shuffle( md5( $rand ) . $rand . $this->random_str() );
}
/**
* Generate a random string, using a cryptographically secure
* pseudorandom number generator (random_int)
*
* This function uses type hints now (PHP 7+ only), but it was originally
* written for PHP 5 as well.
*
* For PHP 7, random_int is a PHP core function
* For PHP 5.x, depends on https://github.com/paragonie/random_compat
*
* @param int $length How many characters do we want?
* @param string $keyspace A string of all possible characters
* to select from
*
* @return string
*/
public function random_str(
int $length = 64,
string $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
): string {
if ( $length < 1 ) {
throw new RangeException( "Length must be a positive integer" );
}
$pieces = [];
$max = mb_strlen( $keyspace, '8bit' ) - 1;
for ( $i = 0 ; $i < $length ; ++ $i ) {
$pieces [] = $keyspace[ random_int( 0, $max ) ];
}
return implode( '', $pieces );
}
}