PHP Tutorials

This section is mainly for some specific types of optimization queries: (1) Count query optimization, (2) Correlation query (3) subquery (4) GROUP by and distinct optimization (5) LIMIT paging optimization count query optimizes the effect of the

This article collects 10 articles about PHP uasort () functions, Welcome to Collection 1. ArrayList namespaces php array sorting Array_multisort and Uasort Introduction: ArrayList namespaces: ArrayList namespaces php array sorting Array_ The

Built a WordPress site, found that the speed is too slow, mainstream optimization is only to reduce the plug-ins, static resource optimization, Web page static and so on, but for a plug-in, using the default theme, PHP file itself request 1 seconds

This article collects 10 articles about PHP atan () functions 1. PHP Math function Large Summary classic worth collecting HTML call PHP function Excel function two times letter Introduction: PHP, Functions: PHP math function Large summary of the

In the forum to read a lot of posts, but found that some people are not very likely to use. Think that the description is not detailed enough to achieve! I'll talk to you again. First, you create a new rss.php file and copy the following code into

What is a floating-point (float) data type? Floating-point data types are our common decimals, like "0.7", "100.2" are floating-point data, floating-point data types can be used to store integers or to store decimals. It's more accurate than the

We know that the role of the addslashes () function is to add backslashes before some of the predefined characters in the input string. So how does it relate to our anti-SQL injection? What is SQL injection? SQL injection attacks are the most

Sometimes you need to transfer an object on the network, in order to facilitate the transfer, the whole object can be converted into a binary string, and then to the other end, and then revert to the original object, this process is called

Description The 1:php5.2.x itself has a php_mssql.dll extension to connect to SQL Server, but this DLL is only used to connect to the lower version of SQL Server (version 2000 below) and is not available in SQL Server 2005 and later Mssql_ Connect

Each function returns the current key/value pair in the array and moves the array pointer forward one step Basic syntax Array each (array & $array) After each (), the array pointer stays in the next cell in the array, or when the end of the array

The PHP code is as follows: Copy the code code as follows: Header ("content-type:text/html; Charset=utf-8 "); if (!empty ($_post[' submit ')) { $url = $_post[' url ']; Action to get a picture of a relative path $url _fields = Parse_url ($url); $main

JSON is often used when we implement certain functions in conjunction with PHP and JavaScript. JSON is a data format of JS, can be directly parsed by JS. PHP cannot read JSON data directly, but PHP provides the Json_decode function to convert JSON

I want to based on the input text, generate a specific font of the picture, according to Php.net on the sample, and can not generate the correct picture, what should I do? Picture in the sample: My Pictures: Code: I use the LNMP one-click

Installed wamp3.0.6 version, in the settings to switch to online status, can be in the same LAN on the other machine through the IP Access prompt 403 Forbidden, but the previous version in Httpd.conf directory settings allow all, Now this 3.0.6

Add the background, the main university graduate one year. In a small network company to get a stable, but the technology is not high-level errand. Learning PHP because of work needs to be contacted (before the university barely touched the point C

Safe Mode restricted functions Daquan Dbmopen: Checks whether the file or directory being manipulated has the same UID (owner) as the script being executed. Dbase_open: Checks whether the file or directory being manipulated has the same UID (owner)

PHP Date and time PHP Multidimensional Arrays PHP Include The PHP date () function is used to format dates or times. PHP Date () function The PHP date () function formats the timestamp as an easier-to-read date and time. Grammar Date

Why do we use the lamp environment, access to the PHP page need to return to Hello world, directly in the file to write Echo ' Hello World ', and Django needs from django.http import HttpResponsedef index(request): return HttpResponse('Hello

I. Basic role of htaccess . htaccess is a plain text file that contains instructions related to Apache server configuration.The main functions of the. htaccess are URL rewriting, custom error pages, MIME type configuration, and access control.

SQL statements (a couple of tables together to query, get the first few to the more than 10 data): 1. If there are a,b,c,d four tables, a,b,c,d are linked together as follows: The ((A Inner join B By A.Id =B.AId) Inner join C By B.Id =C.BId)Inner