Idle in Snatch

Hi

Find old Cao Chat or quite happy, idle snatch ~ ~

1. Regular expressions

User registration verification of the case

<?php
$user = Array (
' Name ' = ' spark1985 ',
' Email ' = ' [email protected] ',
' Mobile ' = ' 13312345678 '
);
For general verification
if (empty ($user)) {
Die (' user information cannot be null ');
}
if (strlen ($user [' name ']) < 6) {
Die (' User name length is at least 6 bits ');
}
The user name must be a letter, a number, and an underscore
if (!preg_match ('/^\w+$/i ', $user [' name '])) {
Die (' User name is not legal ');
}
Verify that the mailbox is formatted correctly
if (!preg_match ('/^[\w\. [Email protected]\w+\.\w+$/i ', $user [' email ']) {
Die (' Email is not legal ');
}
The phone number must be 11 digits and start with 1
if (!preg_match ('/^1\d{10}$/i ', $user [' Mobile '])) {
Die (' mobile phone number is not legal ');
}
Echo ' User information verified successfully ';

-----------------

Preg_replace ('/\w+\.\w+/', ' $ ', $str);

Note here that ${1} is equivalent to $ $, which represents the first matched string, and the $ $ represents the second match. A sort of array-like ordering seems to

2. PHP

-----Session Control (Session&cookie)-----

---Cookie---

---

Cookies are data stored in the client's browser, and we use cookies to track and store user data. In general, cookies are returned from the server to the client via HTTP headers. Most Web programs support the operation of cookies because the cookie is in the header of HTTP, so it must be set before other information output, similar to the use limit of the header function.

PHP uses the Setcookie function to set the COOKIE, and any cookie,php sent back from the browser will automatically store it in the $_cookie global variable, so we can pass the $_cookie[' key ' To read a cookie value in the form of a

Cookies in PHP are very widely used, often used to store users ' login information, shopping carts, etc., and often use cookies to store session IDs to identify users when using session sessions, and the cookie has an expiration date, The cookie is automatically removed from the client. Cookies can also set the domain and path for security control

Idle in Snatch