What is the best way to shift array elements in PHP so that certain elements are moved to the front and others to the back?

To shift array elements in PHP so that certain elements are moved to the front and others to the back, you can use a combination of array functions such as array_filter, array_values, and array_merge. First, filter out the elements that you want to move to the front, then filter out the elements that you want to move to the back. Finally, merge the two filtered arrays together to get the desired result. 

// Original array
$originalArray = [1, 2, 3, 4, 5, 6];

// Elements to move to the front
$frontElements = [3, 4];

// Elements to move to the back
$backElements = [1, 2];

// Filter out elements to move to the front
$frontFiltered = array_filter($originalArray, function($element) use ($frontElements) {
    return in_array($element, $frontElements);
});

// Filter out elements to move to the back
$backFiltered = array_filter($originalArray, function($element) use ($backElements) {
    return in_array($element, $backElements);
});

// Merge the filtered arrays to get the desired result
$finalArray = array_merge($frontFiltered, array_values(array_diff($originalArray, $frontFiltered, $backFiltered)), $backFiltered);

print_r($finalArray);

Keywords

PHP array shift elements front back

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