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Abstract classes and interface definitions in PHP

Here I will introduce the interface first, because abstract classes are not mentioned in several PHP reference books I have read recently.

Oct 09, 2016 am 11:35 AM

PHP uses the mysqli extension library to implement addition, deletion, modification and query (object-oriented version)

The mysqli extension library is an improved version of the mysql extension library. It improves stability and efficiency on the basis of the mysql extension library. The mysqli extension library has two sets of things, one is process-oriented mysqli and the other is object-oriented mysqli. The operation method is generally the same as that of the mysql extension library. This time, we first extract a tool class for operating mysql and the calling class.

Oct 09, 2016 am 11:32 AM

PHP essence

Contents that need to be memorized and mastered regarding PHP organization

Oct 09, 2016 am 11:30 AM

The difference between php using htmlspecialchars() and strip_tags functions to filter HTML tags

Oct 09, 2016 am 11:28 AM

Solving the problem of PHP move_uploaded_file function failing to move pictures

Oct 09, 2016 am 11:25 AM

Usage examples of opendir function in php

Oct 09, 2016 am 11:24 AM

PHP operators

PHP operators can be divided into unary operators, binary operators, and ternary operators according to the number of operands. Unary operators such as ! (negation operator) or ++ (plus one operator). Most of the operators supported by PHP are such binary operators, such as +, -, *, / and other arithmetic operators. There is only one ternary operator (?:). In addition, operators can be classified according to their functions: arithmetic operators, string operators, assignment operators, comparison operators, logical operators, bitwise operators and other operators.

Oct 09, 2016 am 11:21 AM

php operator