XI. Crack Functions

Introduktion

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.

Not: This extension has been removed as of PHP 5 and moved to the PECL repository.

Krav

More information regarding CrackLib along with the library can be found at http://www.crypticide.org/users/alecm/.

Installation

In order to use these functions, you must compile PHP with Crack support by using the --with-crack[=DIR] option.

Konfiguration under drift

De här funktionernas beteende påverkas av inställningarna i php.ini.

Tabell 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().

Resurstyper

Den här utbyggnaden har inte några resurstyper definerade.

Fördefinerade konstanter

Den här utbyggnaden har inte några konstanter definerade.

Exempel

This example shows how to open a CrackLib dictionary, test a given password, retrieve any diagnostic messages, and close the dictionary.
Exempel 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); ?>

Not: If crack_check() returns TRUE, crack_getlastmessage() will return 'strong password'.

Innehållsförteckning
crack_check -- Performs an obscure check with the given password
crack_closedict -- Closes an open CrackLib dictionary
crack_getlastmessage -- Returns the message from the last obscure check
crack_opendict -- Opens a new CrackLib dictionary