What are the functions for judging variables in PHP
This article mainly introduces the function of judging variables in PHP, which has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.
Judgment variable
Is_bool: determine whether it is a Boolean type
Is_float: judging floating point type
Is_integer: judging integers
Is_object: judge the object
Is_array: decision array
Is_string: judging string
Is_resource: judging resources
Is_scalar:scalar is scalar, and judgment is the basic data type: integer, floating-point, Boolean and string
Is_null: whether it is empty
Is_numeric: judge a string of numbers or pure numbers
Gettype: get the data type
Settype: changing data types
What is the framework of php? php framework: 1. Laravel,Laravel is a free and open source PHP application framework. 2. Phalcon,Phalcon is the fastest PHP framework. 3. Symfony,Symfony is a PHP framework for Web projects. 4. Yii,Yii is a fast, secure and professional PHP framework. CodeIgniter,CodeIgniter is a very agile open source PHP framework. 6. CakePHP,CakePHP is an old PHP framework. 7. Kohana recorder Kohana is an agile but powerful PHP framework.
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