Which PHP function is particularly useful for validating and filtering data coming from insecure sources?

  • filter_var()
  • isset()
  • htmlentities()
  • array_push()
The filter_var() function in PHP is particularly useful for validating and filtering data coming from insecure sources. It allows you to apply various filters, such as validating email addresses or sanitizing input, to ensure that the data is safe and adheres to the desired format.
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