XVI. Crack Functions

Εισαγωγή

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.

Óçìåßùóç: This extension has been moved to the PECL repository and is no longer bundled with PHP as of PHP 5.0.0.

Απαιτήσεις

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

Εγκατάσταση

This PECL extension is not bundled with PHP. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: http://pecl.php.net/package/crack.

In PHP 4 this PECL extensions source can be found in the ext/ directory within the PHP source or at the PECL link above. In order to use these functions you must compile PHP with Crack support by using the --with-crack[=DIR] configuration option.

Windows users will enable php_crack.dll inside of php.ini in order to use these functions. In PHP 4 this DLL resides in the extensions/ directory within the PHP Windows binaries download. You may download this PECL extension DLL from the PHP Downloads page or at http://snaps.php.net/.

Ρυθμίσεις κατά την εκτέλεση

Η συμπεριφορά αυτών των συναρτήσεων επιρεάζεται από τις ρυθμίσεις στο php.ini.

Ðßíáêáò 1. Crack configuration options

NameDefaultChangeableChangelog
crack.default_dictionaryNULLPHP_INI_PERDIRAvailable since PHP 4.0.5.
For further details and definitions of the PHP_INI_* constants, see the ÐáñÜñôçìá G.

Τύποι Πόρων

Αυτή η επέκταση δεν έχει resource τύπους ορισμένους.

Προκαθορισμένες Σταθερές

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Παραδείγματα

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

ÐáñÜäåéãìá 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);
?>

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

Ðßíáêáò Ðåñéå÷ïìÝíùí
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