Select find all in PHP

To find all elements of an array satisfying a condition in PHP, you can use the array_filter() function. This function can be used to traverse through every element of an array and return all those elements that satisfy a given condition.

Here is an example of how to find all elements of an array satisfying a condition in PHP:

$numbers = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
// Function to filter even numbers

function filterEven($num) {

    return ($num % 2 == 0);

}
// Filter the array to retrieve even numbers

$evenNumbers = array_filter($numbers, "filterEven");
// Displaying the even numbers

echo "Even numbers are: ";

print_r($evenNumbers);

Output:

Even numbers are: Array ( [1] => 2 [3] => 4 [5] => 6 [7] => 8 [9] => 10 )

In this example, we created an array of numbers and defined a function filterEven to check whether a number is even or not. Then, we used the array_filter() function to filter the array $numbers and return all the even numbers as $evenNumbers. Finally, we printed the results with the print_r() function.