XI. Crack functions

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.

Requirements

More information regarding CrackLib along with the library can be found at http://www.users.dircon.co.uk/~crypto/.

Installation

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

Runtime Configuration

Toto roz╣φ°enφ nemß definovßno ╛ßdnΘ konfiguraΦnφ direktivy.

Resource types

Toto rez╣φ°enφ nemß definovßn ╛ßdn² typ prost°edku (resource).

Predefined constants

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Example

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

Poznßmka: If crack_check() returns TRUE, crack_getlastmessage() will return 'strong password'.

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