Calculate the md5 hash of a string

# md5

(PHP 4, PHP 5, PHP 7)

md5 — Calculate the md5 hash of a string

Avertizare

It is not recommended to use this function to secure passwords, due to the fast nature of this hashing algorithm. See the Password Hashing FAQ for details and best practices.

### Descrierea

md5 ( string `$str` [, bool `$raw_output` = `FALSE` ] ) : string

Calculates the MD5 hash of `str` using the » RSA Data Security, Inc. MD5 Message-Digest Algorithm, and returns that hash.

### Parametri

`str`

  The string.

`raw_output`

  If the optional `raw_output` is set to `TRUE`, then the md5 digest is instead returned in raw binary format with a length of 16.

### Valorile întoarse

Returns the hash as a 32-character hexadecimal number.

### Exemple

Example #1 A md5() example

`<?php
$str = 'apple';
if (md5($str) === '1f3870be274f6c49b3e31a0c6728957f') {
echo "Would you like a green or red apple?";
}
?>`

### A se vedea și

- md5_file() - Calculates the md5 hash of a given file
- sha1_file() - Calculate the sha1 hash of a file
- crc32() - Calculates the crc32 polynomial of a string
- sha1() - Calculate the sha1 hash of a string
- hash() - Generate a hash value (message digest)
- crypt() - One-way string hashing
- password_hash() - Creates a password hash