Create variable function definition and usage summary

Both internal and external variables have a common feature of storing and retrieving information. php is no exception. although many languages require that all variables be defined before use and their type information is fixed, php allows programmers to create variables when using them, and can store information that can be expressed in any type of language. the variable type can also be automatically converted as needed. because you have used php in user space, you should know that this concept is & amp; quot; weak type & amp; quot ;. in this chapter, you will see these... both internal and external variables have a common feature of storing and retrieving information. php is no exception. although many languages require that all variables be defined before use and their type information is fixed, php allows programmers to create variables when using them, and can store information that can be expressed in any type of language. the variable type can also be automatically converted as needed. because you have used php in user space, you should know that this concept is "weak type ". in this chapter, you will see how the information is encoded in the php parent language ---- c (the C type is strict. of course, data encoding is only half the work. to keep track of all these information slices, each variable also requires a tag and a container. from the perspective of user space, you can regard them as the concept of variable names and scopes. the data storage unit in the data type php is zval, also known as Zend Value. it is a struct with only four members, in Zend/zend. the format is as follows: typedef & n

1. [Translation] [php extension development and embedded] Chapter 2nd-internal and external variables

Description: values of variables stored in memory. This means that a space is opened in the memory when a variable is created.

4. yii creates variables in the view (protecting php code) and calls the code instance of the previously created variables in the js file.

Introduction: This article describes how to create a variable in the view (protecting php code) in yii, and call the code instance of the variable created earlier in the js file. if you need it, refer

5. create variables in PHP extensions using PHP core technologies and best practices

Introduction: PHP core technology and best practices create variables in PHP extensions

6. how to dynamically create variables

Introduction: PHP codeArray ([0] => 65 [1] => 66 [2] => 71 [3] => 73 [65] => Array ([ $ _ 65] => 0) [66] =>

7. how to dynamically create variables

Introduction: PHP codeArray ([0] => 65 [1] => 66 [2] => 71 [3] => 73 [65] => Array ([ $ _ 65] => 0) [66] => Array

8. dynamic variable names used in PHP

Introduction: using dynamic variable names in PHP ????? I want to use a dynamic variable name in PHP. so I Google it and find the following web pages for reference :????? 1. PHP: dynamically create a variable name -- define the variable value as the variable name ????? 2. PHP: use $ and array loops to implement dynamic variable names ????? 3. php uses big margin {} to generate dynamic changes

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What is the actual execution process of javascript-js to create and reference variables in functions?

Yii aims to create variables in the view (to protect php code), and then call the previously created variables in the js file.

The preceding section describes how to create a variable function definition and usage summary. For more information, see other related articles in the first PHP community!