PHP Tutorials

"Super Global Variables" A hyper-global variable is an internal variable that can always be used in all scopes. You do not need to perform global $variable in functions or methods, and you can access them. "$GLOBALS" 　　References all variables

PHP does not need (or does not support) explicit type definitions in variable definitions; The variable type is determined by the context in which the variable is used. That is, if you assign a string value to a variable $var, the $var becomes a

When parsing a file, PHP looks for the start and end tags, which is PHP also allows the use of short mark If the file content is pure PHP code, it is best to remove the PHP end tag at the end of the file. This avoids having to accidentally add a

Here's how to do this: $arr = Array (...);//Suppose there are 10,000 elements of arrays with duplicate elements. $arr = Array_flip (Array_flip ($arr)); This allows you to remove duplicate elements. What the hell is going on here? Take a look at the

How do I traverse all the files in the specified directory? (PHP file system operation) in the site's acquired management system, often need to manage and maintain the files on the site server, sometimes need to add a folder, delete a folder or file,

Githttps://github.com/sea-boat/mysql-protocol Overview Server Status identification. More details: Https://dev.mysql.com/doc/internals/en/status-flags.htmlServerStatus class Package com.seaboat.mysql.protocol.constant;/** * * server status. *

Here's a small piece to bring you a PHP using PDO to read data from the database table implementation method (must see). Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little

First, the database connection pool development often need to do some operations on the database, such as common additions and deletions, and so on, when the amount of data is small, can be directly operated, but when the amount of data increased,

Recommendations implemented with thinkphp Yellow Pages System (mini-craigslist) with thinkphp recommendations Yellow Pages System (mini-craigslist) Mini-craigslist.zip (14.82 KB downloaded: 34 times) 1. The Yellow Pages system for imitation

What is PDO? Features of PDO and how to install PDO what is PDO? PDO is the abbreviation for PHP Date object (PHP Data Objects), which is released with the PHP5.1 version, and currently supports databases including Firebird, Freetds,interbase, Mysql,

First we recommend filter_sanitize_string, filter_sanitize_string filters to remove or encode unwanted characters. This filter removes data that is potentially harmful to the application. It is used to remove tags and remove or encode unwanted

Current number of APIs 49 common calculations (one) min-find the minimum max-find the maximum abs-absolute value round-rounding the floating-point numbers ceil-returns the smallest integer greater than or equal to the specified expression, and the

First, the system requirements: the system in the REDHAT7.2 version of the test through two, server-side software requirements: 1: to Apache network station download Apache WEB SERVER HTTP://WWW.APACHE.ORG/2. Download the PHP parser

PHP File processing advanced application-file pointer php can implement the positioning of the file pointer and query, so as to achieve the required information fast query, the file pointer function has rewind (), fseek (), feof () and Ftell ()

The Intercept, divide, and replace parts of the PHP array in this article will describe the interception of arrays (Array_slice), Array_chunk and substitution (Array_splice), and the difference between Array_slice and Array_splice! In the previous

Array_key_exists () defines and uses the array_key_exists () function to determine whether a specified key exists in an array, returns TRUE if the key exists, or false otherwise. The syntax array_key_exists (key,array) parameter describes key

What is a global variable? A global variable, also known as an external variable, is defined outside the function and is scoped to the end of the program file, starting at the definition of the variable. Unlike other programming languages, global

Three groups of easily confusing functions one, htmlentities () and Htmlspecialchars () 1, htmlentities () 1.1 Functions in PHP: Converting characters to HTML entities. Characters include ASCII entities and ISO 8859-1 entities (HTML entity table:

This article collects 10 articles about PHP chgrp () functions recommended to everyone 1. PHP Surface question four--linux part (advanced part) Linux PHP linux uninstall PHP linux start ph Introduction: PHP interview questions, linux:php the

PHP basename () function gives a string containing a full path to a file, this function returns the basic file name, this article collected about the use of PHP basename () function to get the file name of a few articles, I hope to understand that