Generovat náhodný řetězec () php
Příklady kódu
PHP generátor náhodných řetězců
function generateRandomString($length = 25) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
//usage
$myRandomString = generateRandomString(5);php náhodný řetězec
function rand_str() {
$characters = '0123456789-=+{}[]:;@#~.?/>,<|\!"£$%^&*()abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$randomstr = '';
for ($i = 0; $i < random_int(50, 100); $i++) {
$randomstr .= $characters[rand(0, strlen($characters) - 1)];
}
return $randomstr;
}php generovat náhodný řetězec
function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}randomstring php
//generates 13 character random unique alphanumeric id
echo uniqid();
//output - 5e6d873a4f597generovat náhodný řetězec v php
/**
* 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('', $pieces);
}
generátor náhodných řetězců php
function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
Output the random string with the call below:
// Echo the random string.
// Optionally, you can give it a desired string length.
echo generateRandomString();náhodný řetězec generator php
function generateRandomString($length = 10) {
$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
Output the random string with the call below:
// Echo the random string.
// Optionally, you can give it a desired string length.
echo generateRandomString();Generovat náhodný řetězec v PHP
phpCopy<?php
function secure_random_string($length) {
$rand_string = '';
for($i = 0; $i < $length; $i++) {
$number = random_int(0, 36);
$character = base_convert($number, 10, 36);
$rand_string .= $character;
}
return $rand_string;
}
echo "Sec_Out_1: ",secure_random_string(10),"\n";
echo "Sec_Out_2: ",secure_random_string(10),"\n";
echo "Sec_Out_3: ",secure_random_string(10),"\n";
?>
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