How can PHP functions like array_filter be used to manipulate arrays based on specific criteria?

To manipulate arrays based on specific criteria, PHP functions like array_filter can be used. This function filters an array using a callback function, which determines whether each element should be included in the resulting array based on the criteria specified in the callback function. 

// Example of using array_filter to filter an array based on specific criteria
$numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

// Filter out even numbers
$filteredNumbers = array_filter($numbers, function($num) {
    return $num % 2 != 0;
});

print_r($filteredNumbers);

Keywords

PHP array_filter arrays manipulation criteria

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