variable php

Getting Started with PHP is simple, but mastering is not an easy thing to do. We have to know how it works in addition to using it.PHP is a dynamic language for web development. Specifically, it is a software framework that implements a large number

1. If a method can be static, declare it static. Speed improvement is by a factor of 4. If a method can be static, make a static Declaration on it. The speed can be increased to 4 times. 2. echo is faster than print. echo is faster than print. 3.

Use single quotes instead of double quotes to include strings, which is faster. Because PHP will search for variables in strings enclosed by double quotes, but not in single quotes. Note: Only echo can do this, it is a "function" that can treat

1. In the case of file_get_contents instead of file, fopen, feof, Fgets and other series of methods, try to use file_get_contents, because he is much more efficient! But pay attention to file_get_ Contents PHP version problem when opening a URL file;

1. In the case of file_get_contents instead of file, fopen, feof, Fgets and other series of methods, try to use file_get_contents, because he is much more efficient! But pay attention to file_get_ Contents PHP version problem when opening a URL file;

Analysis of the 10 most common errors in PHP programming, analysis of php programming 10 At present, many of my friends are studying PHP and will always encounter various problems in daily program development projects. This article will introduce

1. Replace double quotation marks with single quotes to include strings, which is faster. Because PHP will search for variables in strings enclosed by double quotes, but not in single quotes. Note: Only echo can do this, it is a "function" that can

1, if the method of the class can be defined as static, as far as possible to define as static, it will increase the speed of nearly 4 times times.2. The speed of $row [' ID '] is 7 times times that of $row[id].3. Echo is faster than print, and uses

For the implementation of the notification mechanism, only official documents do not have demo code. For those who have not done so, it takes a lot of time for testing. According to the document, the structure of the data sent from each notification

Summary: Mcrypt 2.4.7 is a powerful extension library for encryption algorithms. It includes 22 algorithms, including the following algorithms: Reference content is as follows: Blowfish RC2 Safer-sk64 xtea Cast-256 RC4 Safer-sk128 DES RC4-iv Serpent

As a php programmer, there are 40 suggestions for PHP code optimization: 1. If a method can be static, it will be declared as static. The speed can be increased to 4 times. 2. echo is faster than print. 3. Use multiple echo parameters instead of

    The basic method of backtracking is to search, or a well-organized search method that can avoid unnecessary search. This method is suitable for solving problems with a large number of combinations. In the solution space tree of a problem, the

A beginner of PHP's accompanying notes, record their growth!A PHP base1.php,web Program Development language, server-side scripting language2.PHP Benefits(1) PHP Code Open Source(2) Support multiple Web servers (Apache,iis,nginx, etc.)(3) Support

HTML form (GET and POST)When a form is submitted to a PHP script, the variables obtained from the form are automatically set to available by the PHP script. See the following example:　 Example 5-2. Simple form variable (Simple form variable) After

[PHP]; PHP is also a constantly evolving tool, and its functionality is constantly being truncated.; And PHP.ini's settings change can reflect a considerable change,; It's good to study php.ini before using the new PHP version.;;;;;;;;;;;;;;;;;;;;

Ec (2); 1. Use as many built-in PHP functions as possible. 2. echo is faster than print. 3. Do not subscribe too many methods. Think carefully about the code you actually intend to reuse? 4. determine the maximum number of cycles before executing

The execution efficiency of programs is very important. Low execution efficiency means that you need to invest more in the server hardware. However, the final result is that your program execution efficiency is low, even hardware cannot be solved.

This article describes some of the ways to turn off notice errors in PHP, but it's important to say that when you turn off the error message, a large number of notice level errors in your program code can cause PHP performance to degrade.PHP

0,Use single quotes instead of double quotes to include strings. Because PHP will search for variables in strings enclosed by double quotes, but not in single quotes. Note: Only echo can do this, it is a "function" that can treat multiple strings as

The global variables in PHP are a little different from those in C language. In C language, global variables take effect automatically in the function unless they are overwritten by local variables, which may cause some problems, some may carelessly