PHP is filled with many amazing functions/classes that we use daily (PDO, array_*, etc.). There are also many classes/functions that have been created to make our lives much easier, many of which are not popularized in tutorials/articles. Whether you're a developer of 6 months or 6 years there are many things that got missed. I will be discussing usefulness of filter_var and the plethora of benefits when using SPL.

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