How php deletes the array value of a specified subscript
This article mainly introduces "php how to delete the array value of the specified subscript". In the daily operation, I believe many people have doubts about how to delete the array value of the specified subscript in php. The editor consulted all kinds of data and sorted out a simple and useful method of operation. I hope it will be helpful to answer the question of "how to delete the array value of the specified subscript by php". Next, please follow the editor to study!
Php delete the specified subscript array value method: 1, use unset () function, syntax "unset ($arr [specify subscript]);"; 2, use array_splice () function, syntax "array_splice ($arr, specify subscript, 1)".
Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer
PHP deletes the array value of the specified subscript
Method 1: use the unset () function
If you want to delete an element from the array, you can use unset ().
The unset () function allows you to cancel elements from an array, but the array does not rebuild the index, that is, it maintains the original index, because the index in php has a special meaning.
Example: delete an element with subscript 2
Output result:
Array ([1] = > one [3] = > three)
Method 2: use the array_splice () function
The array_splice () function can be used to delete array elements of a specified length from a specified location.
You only need to set the second parameter of the function to the specified subscript and the third parameter to 1 (delete an element).
Output result:
Array ([0] = > one [1] = > two [2] = > php) at this point, the study on "how php deletes the array value of a specified subscript" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!
