PHP: crypt() function
Description
The crypt() is used to encrypts a string using DES, Blowfish, and MD5 (if available) algorithms.
Version:
(PHP 4 and above)
Syntax:
crypt(string1, salt)
Parameters:
Name | Description | Required / Optional |
Type |
---|---|---|---|
string1 | The string to be encrypted. | Required | String |
salt | An optional salt string to base the hashing on. If not provided, the behavior is defined by the algorithm implementation and can lead to unexpected results. | Optional | String |
Return value:
The encrypted string.
Value Type: string
Example:
<?php
echo "Standard DES: ".crypt("Thank you")."\n<br />";
echo "Extended DES: ".crypt("Thank you")."\n<br />";
echo "MD5: ".crypt("Thank you")."\n<br />";
echo "Blowfish: ".crypt("Thank you");
?>
Output:
Standard DES: $1$cx1./y3.$H.8Trcy6pLgimqOWmGYrh/ Extended DES: $1$aU0.bl3.$h0A8HqJMF8gA3KwoZa6vq0 MD5: $1$Ic4.x85.$VmsInH4NRIb9WS5ofMGi80 Blowfish: $1$m00.1U3.$8BdJ6KtYIhRSMSJVqQpN71
View the example in the browser
See also
PHP: Tips of the Day
In PHP, there are two versions of logical AND and OR operators.
Operator | True if |
---|---|
$a and $b | Both $a and $b are true |
$a && $b | Both $a and $b are true |
$a or $b | Either $a or $b is true |
$a || $b | Either $a or $b is true |
Note that the && and || opererators have higher precedence than and and or. See table below:
Evaluation | Result of $e | Evaluated as |
---|---|---|
$e = false || true | True | $e = (false || true) |
$e = false or true | False | ($e = false) or true |
Because of this it's safer to use && and || instead of and and or.
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework