Is there a PHP function to remove any/all key/value pairs that have a certain value from an array?

Question

I think questions like this are the reason why I don\'t like working with PHP. The manual is good, if you can find what you are looking for. After reading through the Array Func

Answer 1

array_filter does this for you. You just need to provide a filter callback function:

function myFilter($Value){
   if($Value == 'red'){
      return false;
   }
   return true;
}

$Values = array("a" => "green", "red", "bicycle", "red");

$Values = array_filter($Values, 'myFilter');

returns:

array {
  ["a"] => "green"
  [1]   => "bicycle"
}

The filter function should return true for values you want to keep and false for those you wish to remove. Then just go ahead and use array_values to re-index the array. e.g.

$Values = array_values(array_filter($Values, 'myFilter'));

If you are doing this within an object and you want to call a filter method within the object you can use this form for the callback:

array_filter($Values, array($this,'myFilter'));