php built in functions

Optimization of PHP code-jerrylsxu 1. if the class method can be defined as static, it should be defined as static as much as possible, and its speed will be increased by nearly four times. 2. $ row ['id'] is 7 times faster than $ row [id. 3. echo

Baidu engineers talk about the implementation principle and performance analysis of PHP functions (1 ). Baidu engineers talk about the implementation principles and performance analysis of PHP functions (I) This article mainly introduces Baidu

Brothers share what PHP experts do: 50 details that cannot be viewed 1. replace double quotation marks with single quotes to include strings, which will be faster. Because PHP will search for variables in strings enclosed by double quotation marks,

Php to optimize the definition and code. The article summarizes the optimization and optimization code in php, which provides php programmers with a good idea. 1. if you can define a class method as static, try to define it as static, its speed will

mysql_connect ("localhost", "root", "123456") or Die ("Database connection failed!"); mysql_select_db ("Test1"); $user =$_post[' uid ']; $pwd =$_post[' pass '; if (mysql_query ("SELECT * from where Admin = '

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;

This article is mainly to share with you the PHP test paper Summary, I hope to help everyone. 1. What is object-oriented? What are the main features? Object-oriented is a design method of program, it is advantageous to improve the reusability of

Common sorting algorithms are: bubble sort, quick sort, select sort, insert sort, here as your recent interview preparation for the study notes, but also hope to help you. Requirement: An array of multiple numbers is sorted from small to large.

This article is mainly to share with you how PHP can turn on gzip to improve the responsiveness of web pages, hoping to help everyone. 1. Apache opens gzip (this way requires server restart): A. Open the module: LoadModule deflate_module

Php has an example of the xml reading problem on the internet. the code is as follows, but it is not displayed when it is run. it only shows & quot; Name: & quot; and there is nothing behind it, do you still need to configure it? Please help solve

Summary of some policies for optimizing php program efficiency, and summary of php efficiency policies. Summary of some policies for optimizing php program efficiency, and summary of php efficiency policies 1. when file_get_contents can be used to

Filter input Filtering is the foundation of Web application security. It is the process of verifying the legitimacy of your data. By confirming that all data is filtered at input, you can avoid contaminated (unfiltered) data being into trusting and

Definition and application of function This chapter highlights 2 using built-in PHP functions 2 Navigating the Online function manual 2 user-defined functions 2 Price Tips: Variable parameters, reference calls, and variable functions Any

Using PHP to simulate our usual DOS command ping command, the main use of PHP's built-in function exec to call the system's ping command, to achieve the ping command function. "; flush (); while (1) {echo "", exec ("Ping-c $count-S $psize $to _ping"

Write a custom function to make $ dataarray (,) & gt; $ dataarray ); the number in the original array is split into "single" bits. The following is a self-written function: The code is as follows: Function splitStrToArray_mine ($ array){$

The basic information about the operating system of the current server is displayed in the background development of the project. This includes the PHP version and the server operating system. I have summarized some of them and shared them with you

0. It is quicker to use single quotes instead of double quotes to contain strings. Because PHP will search for variables in a string surrounded by double quotes, single quotes will not, note: only echo can do this, it is a string can be used as a

In real projects, when php functions cannot meet our needs, we can write our own functions to complete any task. this is a custom function. PHP built-in functions can be used in user-defined functions. in real projects, when php functions cannot

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

Php programmers must know about 40 PHP code optimizations. As a php programmer, there are 40 suggestions for PHP code optimization that must be known: 1. if a method can be static, make a static declaration on it. The speed can be increased to 4