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PHP

geoffrey
geoffrey
28,736 Points
Posted by geoffrey
geoffrey
28,736 Points

Form validation, sanitize filter, Which filter to use and why ?

Hi Alena Holligan ,

I wanted to know, in the video about the simple form validation with PHP you show how to use the INPUT_POST function and the differents filters.

My question is really simple, why do you use the FILTER_SANITIZE_SPECIAL_CHARS on the details variable (Which contains information from the textarea, basically a string), where as for the input name you use the FILTER_SANITIZE_STRING filter.

Both are input sending a string to the server, both can have html tags or special chars, which one to use in which circumstance ? I looked at the PHP doc and can't see any reason to use one over the other.

Thank you in advance for your enlightment.