Detailed introduction to data validation class

When friends learn the PHP language, they will definitely pay attention to security issues in the actual development process. So, today we will introduce to you the primary measure to ensure PHP security-verification data. Validation of data is the most important habit you can adopt. And when it comes to input, it's very simple: don't trust the user. When validating data to secure PHP, remember that it's often easier to design and validate the values ​​your application allows than to protect against all unknown values. Listed below are general validation tips that apply to various types of validation data: 1. Use values ​​from a whitelist 2. Always re-validate for limited options 3. Use built-in escape functions 4. Validate for correct data type (e.g. number) White A white-listed value is a correct value, as opposed to an invalid black-listed value. The difference between the two is that typically when validating data, the list or range of possible values ​​is smaller than the list or range of invalid values, many of which may be unknown or unexpected values. To this end, our PHP Chinese website provides 10 useful PHP data verification libraries for everyone to download and refer to. (Remarks: More data validation classes

1. [Data Validation Class Library] Share 10 useful PHP data validation classes

##Introduction: When friends learn the PHP language, they will definitely pay attention to the security issues in the actual development process. So, today we are here to explain. Let's introduce the first step to ensure PHP security-validation of data. When it comes to input, it is very simple: don't trust the user. ##2. php form data validation class

Introduction:: This article mainly introduces the php form data validation class. Students who are interested in PHP tutorials can For reference.

3. php form data validation class, php form validation_PHP tutorial

##Introduction: php Form data validation class, php form validation. php form data validation class, php form validation is very easy to use and convenient form data validation class? php // Validation class Fun{ function isEmpty( $val ) { if (! is_string ( $val )) return fals

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php form data validation class, php form validation

Introduction: php form data Validation class, php form validation. php form data validation class, php form validation is very easy to use and convenient form data validation class? php // Validation class Fun{ function isEmpty( $val ) { if (! is_string ( $val )) return fals

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PHP code to implement form data validation class_php example

Introduction: This article mainly Introduced the PHP code to implement form data validation class. Friends who need it can refer to

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Simple data validation class of TP3.2

Introduction: Provide various official and user-released code examples and code references. Everyone is welcome to communicate and learn.

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PHP code to implement form data verification class

Introduction: This article mainly introduces the PHP code to implement the form data validation class. Friends in need can refer to ##8 .

PHP code to implement form data validation class_PHP

Introduction: This article mainly introduces PHP code to implement form data validation class. Friends who need it can refer to it.

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