INSERT AT THE BEGINNING OF AN ARRAY IN PHP

Last week, while programming, I needed to insert an array at the beginning of another. So, since basically I was just merging 2 arrays, I tried to do it like this:

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$originalArray = array(     1 => 'First item',     4 => 'Forth item',     5 => 'Fift item',     10 => 'Tenth item', // and so on );   $insertAtBegining = array(     0 => 'None', );   $newArray = array_merge($insertAtBegining, $originalArray);

But it didn’t work.  It was displaying something like:

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Array (     [0] => None     [1] => First item     [2] => Forth item     [3] => Fifth item     [4] => Tenth item )

Not a good result, because the arrays’ keys were actually primary keys used by the RDBMS so it was very important for me to keep the original keys. I didn’t want to take the lame approach and do a foreach loop:

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$newArray = $insertAtBegining; foreach($originalArray as $key => $value) {     $newArray[$key] = $value; }

…because it was too obvious, so I did something less obvious, and much more complicated:

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$newArray = array_combine(     array_merge(array_keys($insertAtBegining), array_keys($originalArray)),     array_merge(array_values($insertAtBegining), array_values($originalArray)) );

But in the end, the most simple and elegant solution:

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1	$newArray = $insertAtBegining + $originalArray;