php built in functions

What is the knowledge structure of a qualified PHP engineer? I personally think that a qualified PHP programmer at the 1% flagship store should have the following knowledge: 1. familiar with PHP syntax, familiar with most common PHP built-in

Notice the simple PHP performance optimization note, the PHP performance optimization What happens, you may experience performance issues: Improper use of 1.php syntax2. Use the PHP language to do what it is not good at3. A service that is

Notes on simple php performance: Simple php performance. Notes on simple php performance: What are the performance conditions of simple php? performance problems may occur: 1. incorrect php syntax 2. I used php to do what I was not good at. 3. use

Php functions, classes and objects, encapsulation, inheritance of classes, static methods of classes, static properties 1. Functions & #160; & #160; & #160; php built-in functions can be used directly. If php extensions are not installed, you can & #

Because php is an open language, it also leads to the lack of strong and authoritative support for the development environment. Here are some good editing tools, hoping to help you develop php programs. Because php is an open language, it also leads

Some php packages and phpinfo problems 1. in Liunx, PHP packages include bin, etc, include, lib, and man, and dev, ext, extras, and pear in win? Why is there such a difference? 2. I understand that ext in win is installed with PHP extensions. are

First, the basic question 1. Write the output of the following program $STR 1 = null; $str 2 = false; echo $str 1== $str 2? ' Equal ': ' Not equal '; $str 3 = ";$str 4 = 0;Echo $str 3== $str 4? ' Equal ': ' Not equal '; $str 5 = 0;$str 6 = ' 0′;

Below I have summarized some character replacement methods in php development, including direct replacement without regular expressions or replacement with regular expressions, and replacement using php built-in functions. For example, there is a

PHP functions, classes and objects, and class encapsulation, inheritance, class static methods, static properties, PHP static 1. Functions PHP built-in functions can be used directly, if not installed PHP extension can be Custom functions

Use PHP to describe the bubble sorting and quick sorting algorithms. The object can be an array.Using PHP to describe sequential search and binary search (also called semi-query) algorithms, the efficiency of sequential search must be considered.

1.3. Method Like the principles in the previous section, there are still many methods to use when developing security applications. All the methods mentioned below are also important to me. Some methods are abstract, but each of them has

Development tools Dreamweaver Starting with MX, DW is starting to support Php+mysql visualization, which is really a good choice for beginners, because if it's a general development, you can write a program without writing a single line of code,

This article gives an example of how PHP obtains system variables. Share to everyone for your reference. Specifically as follows: Here are some PHP built-in functions to get a variety of system variables. ? 1 2 3 4 5 6 7 8 9 $v =

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

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

Compiling the source package requires./configure then compile a. so fileOne less error packetInstall packageNormal displayThe LS directory has a./configure fileQuerying module LocationsEditing a configuration fileEditing a configuration fileIncrease

0. It is quicker to use single quotes instead of double quotes to contain strings. Because PHP searches for variables in a string enclosed in double quotes, single quotes are not, note: only echo can do this, it is a "function" that can take

1. 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

The background of the story is this, a set of projects, the server is written in C #, in order to accomplish something, it needs to use a component, this component is very small but very important, unfortunately, this component is written in PHP

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