How to Filter a Multidimensional Array in PHP Using Partial String Matching?

Filtering Multidimensional Arrays Based on Partial Match

In this programming task, we present you with a scenario where you require a function to filter a multidimensional array based on a partial match of a search value. Consider the given array:

array(
 [0] =>
  array(
   ['text'] =>'I like Apples'
   ['id'] =>'102923'
 )
 [1] =>
  array(
   ['text'] =>'I like Apples and Bread'
   ['id'] =>'283923'
 )
 [2] =>
  array(
  ['text'] =>'I like Apples, Bread, and Cheese'
  ['id'] =>'3384823'
 )
 [3] =>
  array(
  ['text'] =>'I like Green Eggs and Ham'
  ['id'] =>'4473873'
 ) 
etc.. 

We seek to search for the needle "Bread" in the array and obtain the following result:

[1] =>
  array(
   ['text'] =>'I like Apples and Bread'
   ['id'] =>'283923'
 )
 [2] =>
  array(
  ['text'] =>'I like Apples, Bread, and Cheese'
  ['id'] =>'3384823'

To accomplish this, we leverage the array_filter function, which allows us to define a callback that determines which elements to retain in the array based on a given condition. In this scenario, we return true if the 'text' field contains the search_text, indicating that the element should be kept. A return value of false would remove the element.

The implementation looks like this:

$search_text = 'Bread';

$filtered_array = array_filter($array, function($el) use ($search_text) {
    return ( strpos($el['text'], $search_text) !== false );
});

By implementing this method, you effectively filter the multidimensional array and return only the elements that partially match the search value you specify. For further guidance, refer to the following resources:

• [PHP array_filter](https://www.php.net/manual/en/function.array-filter.php)
• [PHP strpos return values](https://www.php.net/manual/en/function.strpos.php)

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