How php adds elements to an array

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In php, you can use the array_splice () function to add elements in the middle of an array by setting the second parameter of the function to a value greater than 0 and less than "array length-1", syntax "array_splice (array, index position to be inserted, 0, element value)".

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Php adds elements in the middle of the array

In php, you can use the array_splice () function to add elements in the middle of an array.

The array_splice ($array,$start,$length,$value) function inserts a new element anywhere in the array.

When $length=0, the parameter $start specifies where to start the insertion (subscript), and the parameter $value specifies the insertion value (if it is multiple values, it needs to be set to an array).

Example:

You can see that when the value of the parameter $start is greater than 0 and less than Array length-1, you can add elements in the middle of the array.

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