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The SplFixedArray class provides the main functionalities of array. The main difference between a SplFixedArray and a normal PHP array is that the SplFixedArray must be resized manually and allows only integers within the range as indexes.
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Jan 13, 2024 · SplFixedArray is a part of PHP’s Standard PHP Library (SPL) and offers a faster, more memory-efficient option for dealing with arrays with a fixed size. Unlike standard PHP arrays, which are actually ordered maps and can have any size, SplFixedArray requires you to set its size upon initialization, which cannot be changed later.
Sep 7, 2025 · The SplFixedArray class provides the main functionalities of array. The main difference between a SplFixedArray and a normal PHP array is that the SplFixedArray must be resized manually and allows only integers within the range as indexes.
Import to SplFixedArray & Export from SplFixedArray You can also import/export a normal PHP Array into and out of an SplFixedArray with the fromArray and toArray methods.
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Because SplFixedArray is technically an instance of a class aswell, as opposed to traditional arrays, that is what is causing small arrays to be actually sightly more memory consuming if implemented by SplFixedArray, but as this extra few hundred of bytes remains constant, it becomes irrelevant as the size of the array grows.
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The SplFixedArray class provides the main functionalities of array. The main difference between a SplFixedArray and a normal PHP array is that the SplFixedArray must be resized manually and allows only integers within the range as indexes.
