Introduction
These functions allow you to use the CrackLib library to test the
'strength' of a password. The 'strength' of a password is tested by that
checks length, use of upper and lower case and checked against the
specified CrackLib dictionary. CrackLib will also give helpful diagnostic
messages that will help 'strengthen' the password.
Installation
In order to use these functions, you must compile PHP with Crack support
by using the --with-crack[=DIR] option.
Runtime Configuration
The behaviour of these functions is affected by settings in php.ini.
Table 1. Crack configuration options
| Name | Default | Changeable |
|---|
| crack.default_dictionary | NULL | PHP_INI_SYSTEM |
For further details and definition of the PHP_INI_* constants see
ini_set().
Resource Types
This extension has no resource types defined.
Predefined Constants
This extension has no constants defined.
Examples
This example shows how to open a CrackLib dictionary, test a given
password, retrieve any diagnostic messages, and close the dictionary.
Example 1. CrackLib example <?php
// Open CrackLib Dictionary
$dictionary = crack_opendict('/usr/local/lib/pw_dict')
or die('Unable to open CrackLib dictionary');
// Perform password check
$check = crack_check($dictionary, 'gx9A2s0x');
// Retrieve messages
$diag = crack_getlastmessage();
echo $diag; // 'strong password'
// Close dictionary
crack_closedict($dictionary);
?> |
|
