Генерировать случайную строку в PHP
phpCopy<?php
$Random_str = uniqid();
echo "Random String:", $Random_str, "\n";
?>
CodeGuruDev
phpCopy<?php
$Random_str = uniqid();
echo "Random String:", $Random_str, "\n";
?>
phpCopy<?php
echo uniqid('user_');
?>
/**
* 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
*/
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);
}
phpCopy<?php
echo "Out1: ",substr(md5(time()), 0, 16),"\n";
echo "Out2: ",substr(sha1(time()), 0, 16),"\n";
echo "Out3: ",md5(time()),"\n";
echo "Out4: ",sha1(time()),"\n";
?>
phpCopy<?php
$x = 0;
$y = 10;
$Strings = '0123456789abcdefghijklmnopqrstuvwxyz';
echo "Gen_rand_str: ",substr(str_shuffle($Strings), $x, $y), "\n";
$a = 0;
$b = 20;
$Strings='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
echo "Gen_My_Pass: ",'hello.'.substr(str_shuffle($Strings), $a, $b).'.World',"\n";
?>
phpCopy<?php
echo "Output-1: ",bin2hex(random_bytes(10)),"\n";
echo "Output-2: ",bin2hex(random_bytes(20)),"\n";
echo "Output-3: ",bin2hex(random_bytes(24)),"\n";
?>