Validating data in php form

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These libraries can be great time savers but for various reasons, you may need to write your own form validation routines.When validating form data, it is likely that a user will submit something that does not pass the validation routine."Input validation" is the process of double checking form data input to ensure they are the correct data the server needs to process.

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However, a lot of website forms do not have input validation.A common web task in web application development is to validate data input by a user.This is usually done to ensure that the type of data entered matches the expected data types for an underlying database.If you submit the form you should simply see the form reload.That’s because you haven’t set up any validation rules yet.

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