PHP push elements into the array header (Array_unshift usage) _php Tutorial

In PHP, it is common to add elements like arrays to the Array_push function, which is the stack operation of the array, but the function is to add elements to the end of the array, if you need to press the array elements into the array's head (that is, the first element) how to do it?

Using the PHP built-in function Array_unshift, here's a list of array_unshift the function.

Array_unshift

The function is to insert one or more elements at the beginning of the array. The added elements are added as a whole, and the elements in the array are in the same order as in the arguments. All numeric key names in the modified array are modified to count back from zero, and all text key names remain unchanged. The function returns the number of elements in the array after the operation.

Syntax: int array_unshift (array & $array, mixed $var [, mixed $ ...]

For example:

 
The above routines will output:
Array
(
[0] = Apple
[1] = Raspberry
[2] = Phpernote
[3] = =. com
)
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