PHP: sha1() function
Description
The sha1() function is used to calculate the sha1 hash of a string.
Version:
(PHP 4 and above)
Syntax:
sha1(string1, raw_output)
Parameter:
Name | Description | Required / Optional |
Type |
---|---|---|---|
string1 | The input string. | Required | String |
raw_output | If TRUE sets raw 20 characters binary format. If FALSE (default) sets raw 40 character hex number format. | Optional | Boolean |
Return value:
Returns the sha1 hash as a string.
Value Type: String.
Example:
<?php
$str = 'Good Morning';
echo sha1($str).'<br>';
echo sha1($str,TRUE).'<br>';
?>
Output:
06e336231466d0b0573a05cbca7813444afb5b29 ã6#fаW:ËÊxDJû[)
View the example in the browser
See also
Previous: sha1_file
Next: similar_text
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.
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