PHP

Binary Search Algorithm, Binary Search Algorithm Prerequisites for the binary search algorithm: 1. index array; 2. It is for an array that has been prepared. Code Demonstration: // Function: searches for data from the position $ begin the array $

Yii2 implements single-point logon, and yii2 implements single-point logon. This article introduces how to implement Single-point logon in Yii2 and shares it with you, as follows: Modify/common/config/main. php 1. Add the following code to the

This article describes how to convert a multi-dimensional array to a one-dimensional array format that supports curl submission. For more information, see The code is as follows: /*** @ Desc multi-dimensional array converted to an array that

This article provides a detailed analysis of the implementation code of php code recording execution time. For more information, see The code is as follows: $ T1 = microtime (true );//... Execute the code...$ T2 = microtime (true );Echo

The following is a detailed analysis of using recursive implementation in php to reference strings using backslash. For more information, see Implementation code: The code is as follows: Function addslashes_deep ($ value){// The most classic

The test here is to write 1 million rows of records to the file. if the data volume is small, such as about 1000 records, the gap may be small. function microtimeFloat (){ List ($ usec, $ sec) = explode ("", microtime ()); Return (float) $ usec +

The following is a detailed analysis of the methods for selecting the file path of php + mcDropdown in the drop-down box. For more information, see Recently, I used php to read the file directory information and obtained the following code on the

This article mainly discusses websessions, which generally have two types: client SESSION and server SESSION, the next most common one is how to maintain the SESSION in the PHP provided by JavaBeans, and some ideas about the latest project. there is

The following is a detailed analysis of the implementation code for obtaining the substrings that appear most frequently in Chinese strings. if you need them, you can refer to the following code directly, you can set the length of a substring (for

The Mcrypt library supports over 20 encryption algorithms and 8 encryption modes. Specifically, you can use the mcrypt_list_algorithms () and mcrypt_list_modes () functions to display the Mcrypt extension library for encryption and decryption, that

Today, I will introduce you to the implementation methods of cross-site request forgery in php and some common methods to prevent forgery, if you have any questions, refer to the introduction of counterfeit cross-site requests. It is difficult to

The image in the CSS file has never known how to download before, but now it can be implemented simply using php. The details are as follows, if you are interested, you can refer to sharing a piece of code for downloading images in CSS files using

To enable Gzip, you need to support the server. here, we simply use php to determine whether the server supports the Gzip function. The details are as follows, if you are interested, you can refer to Gzip to compress the webpage size to accelerate

There are many ways to get the key value of the associated array. This article describes how to implement the key value in PHP and JavaScrip. if you are interested, refer to the PHP version below: The code is as follows: $ O = array ('x' => 1,

There are many ways to capture remote images. in this article, we will introduce how php is implemented. if you are interested, you can understand it. The code is as follows: Function grabImage ($ url, $ filename = ''){If ($ url = ''){Return

The following describes the basic usage of the regular expression preg_match_all in PHP. if you need a regular expression, you can refer to the regular expression, you need to master some basic knowledge of common regular expressions. if you can

This article mainly describes how to verify whether the page is redirected by determining the relevant parameters of PHP $ _ SERVER, but this is only valid in the Apache environment. How can I determine the ISAPI Rewrite environment? In the ISAPI

For convenience, you can convert the php array into a string and save it to the database. You can retrieve the string and convert it into an array as needed. The following is a custom function for converting php arrays and strings. The code is as

This article mainly introduces the difference between braces and curly braces in the json_encode value. For more information, see the example description. For more information, see section 1. when array is a continuous array starting from 0, the

This article mainly introduces the implementation code for setting and executing the output results in PHP. For more information, see The code is as follows: Set_time_limit (10 );Ob_end_clean (); // disable the output buffer before loop