array_push() vs. $array[] = …. Which is fastest? [duplicate]

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It depends…

Documentation says,

“If you use array_push() to add one element to the array it’s better to use $array[] = because in that way there is no overhead of calling a function.”

Source: http://us2.php.net/array_push

So it boils down to how much data you want to cram into that array at any particular moment.

Additionally, there’s a fall-back. If the array-referenced doesn’t exist when you call it using array_push, you’ll bump an error. If you use $array[], the array will be created for you.

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