XI. Crack Functions

介绍

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.

注: 该扩展已经从 PHP 5 中移出，然后移入到 PECL 仓库中。

需求

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

安装

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

运行时配置

这些函数的行为受到全局配置文件 php.ini 的影响。

表格 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().

资源类型

该扩展模块未定义任何资源类型。

预定义常量

该扩展模块未定义任何常量。

范例

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

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

目录
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