webtoolkit.info » PHP

PHP validate email

admin — Tue, 17 Feb 2009 19:59:41 +0000

PHP validate email script is an easy way to validate an email address. Use this quick and simple PHP regular expression for email validation. This is also case-insensitive, so it will treat all characters as lower case. It is a really easy way to check the syntax and format of an email address. Function will return TRUE if address is valid and FALSE if not.

Source code for webtoolkit.validate-email.php

/**
*
*  PHP validate email
*  http://www.webtoolkit.info/
*
**/
 
function isValidEmail($email){
	return eregi("^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$", $email);
}

PHP password protect

admin — Tue, 17 Feb 2009 19:57:43 +0000

PHP password protect – is a script which you need to protect some page generated with PHP. Password protection for a single page. Visitors are required to enter a password and username to view the page content.

Just include this function into your code, and call it at the top of your page with valid USERNAME and PASSWORD.

Source code for webtoolkit.protect.php

/**
*
*  PHP password protect
*  http://www.webtoolkit.info/
*
**/
 
function passwordProtect($username, $password){
	if (
			(
				!isset($_SERVER['PHP_AUTH_USER']) ||
				(
					isset($_SERVER['PHP_AUTH_USER']) &&
					$_SERVER['PHP_AUTH_USER'] != $username
				)
			) &&
			(
				!isset($_SERVER['PHP_AUTH_PW']) ||
				(
					isset($_SERVER['PHP_AUTH_PW']) &&
					$_SERVER['PHP_AUTH_PW'] != $password
				)
			)
		)
	{
		header('WWW-Authenticate: Basic realm="Login"');
		header('HTTP/1.0 401 Unauthorized');
		echo 'Please login to continue.';
		exit;
	}
}

PHP random password generator

admin — Tue, 17 Feb 2009 19:55:40 +0000

PHP password generator is a complete, working random password generation function for PHP. It allows the developer to customize the password: set its length and strength. Just include this function anywhere in your code and then use it.

Source code for password.php


 
function generatePassword($length=9, $strength=0) {
	$vowels = 'aeuy';
	$consonants = 'bdghjmnpqrstvz';
	if ($strength & 1) {
		$consonants .= 'BDGHJLMNPQRSTVWXZ';
	}
	if ($strength & 2) {
		$vowels .= "AEUY";
	}
	if ($strength & 4) {
		$consonants .= '23456789';
	}
	if ($strength & 8) {
		$consonants .= '@#$%';
	}
 
	$password = '';
	$alt = time() % 2;
	for ($i = 0; $i < $length; $i++) {
		if ($alt == 1) {
			$password .= $consonants[(rand() % strlen($consonants))];
			$alt = 0;
		} else {
			$password .= $vowels[(rand() % strlen($vowels))];
			$alt = 1;
		}
	}
	return $password;
}
 
?>