PHP

Abstract: you cannot create custom functions with the same name as built-in functions, or modify built-in functions... some built-in functions are included in Smarty. Built-in functions are part of the template language. You cannot create or modify

I have not learned much about this function. it is generally used to set character encoding or page jump. I will not elaborate on setting encoding. In the past, I only knew that no output is allowed before the jump to the header. Otherwise, an error

This article introduces several issues that should be paid attention to when using phphpheader for page jump. 1. there cannot be spaces between location and:; otherwise, an error will occur. 2. there cannot be any output before using the header. 3.

This article mainly introduces the usage of php external execution command functions, and analyzes the usage skills related to exec and system execution of external commands in the form of instances, for more information, see the example in this

This article mainly introduces PHP array operations, and analyzes php array conversion, sorting, removal, and other related operation skills in the form of simple instances, for more information about PHP array operations, see the following example.

This article mainly introduces the PHP online package download function implementation method, and analyzes the php package download implementation process and related precautions based on the instance form, for more information about how to

This article mainly introduces the implementation code of PHP to obtain the N-layer classification tree from a two-dimensional array. if you need it, refer to the product category of the company in a table and identify its parent category by mid,

This article describes how php uses the SAE native Mail class to send various types of mails, and analyzes the operation skills related to the SAE platform to solve the Mail sending problem in the form of examples, for more information about how php

The following is an article about the mutual calls of static and non-static methods in PHP. I think this is quite good. now I will share it with you and give you a reference. Let's take a look at the static method that can be called in PHP's

This article mainly introduces the PHP image watermarking function, and analyzes the php image watermarking operation steps and related techniques in the form of two simple examples, for more information about adding watermarks to PHP images, see

This article mainly introduces simple PHP database operation instances and supports addition, deletion, modification, query, and chain operations. it is very suitable for the development and use of small projects and provides complete instances at

This article mainly introduces php's simple method for sorting multi-dimensional arrays, involving php array traversal and array_multisort functions, for more information about how to sort multidimensional arrays in php, see the following example.

This article mainly introduces php and md5 encryption and decryption algorithms, and analyzes the implementation skills related to php and md5 encryption and decryption algorithms for user-defined keys, for more information, see the example in this

This article describes several methods to intercept Chinese strings in php and has some reference value. For more information, see section 1. intercept Chinese strings in GB2312. 0xa0) {$ tmpstr. = substr ($ str, $ I, 2); $ I ++;} else $ tmpstr. =

The following small series will give you a detailed description of the differences between php static methods and common methods. I think this is quite good. now I will share it with you and give you a reference. Let's take a look at the following:

When I recently learned about URL redirection, I introduced three super-useful PHP encryption and decryption functions, which seem to be in discuz... The reason for using these encryption and decryption is that sometimes your URL address is obtained

This article mainly introduces how to use the md5 function to encrypt strings in Linux using PHP scripts. you only need to install PHP in Linux and then use the example in the command line, for more information, see # Touch a. php // Create a. php

This is a method, but it is the safest, because it can be solved as long as you know the principle, but you do not have high requirements. $ ReturnUrl = rawurlencode (response ($ returnUrl); // Encode $ returnUrl = parse_str (base64_decode ($

What I encountered when I used Sina Weibo to perform automatic login was that as a big newbie, even the login script was written by someone else and used it for modification, in the end, I realized that the script was used to obtain cookies. it was

Phpsession application instance logon verification Login -------------------------------------------------------------------- @ Mysql_connect ("localhost", "root", "1981427") // you must connect to the database server before