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This article introduces the knowledge of "how to remove multiple elements of php array". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

In php, you can use array_splice () to remove multiple array elements. This function removes a specified number of elements from a specified location. The syntax "array_splice (array, start position, delete number)". If the second parameter is a positive array, it is deleted after going; if it is negative, it is deleted from the reciprocal position.

The operating environment of this tutorial: windows7 system, jquery1.10.2 version, Dell G3 computer.

In php, you can use the array_splice () function to remove multiple array elements.

The array_splice () function removes a specified number of elements from a specified location. This function changes the original array. Syntax:

Array_splice (array,start,length)

Arr represents an array.

Start indicates where to start the deletion (subscript):

If start is positive, it is deleted from after going.

If the start is negative, it is deleted from back to front, starting from the end of the arr-start. For example,-2 means starting with the penultimate element of the array.

Length is an optional parameter that indicates the number of elements deleted:

If length is positive, it means deleting length elements

If length is negative, all elements from start to the reciprocal length at the end of the array will be deleted

If omitted, all elements from start to the end of the array are deleted.

If start is positive, you need to specify the number of elements to delete length;. If start is negative, delete the specified number of elements from the reciprocal position.

Example 1: delete 2 elements from the beginning

Example 2: remove 2 elements from the middle

Example 3: delete 2 elements from the end

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