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This article mainly introduces "how php deletes the whole element". In the daily operation, I believe many people have doubts about how to delete the whole element in php. The editor consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to delete the whole element by php". Next, please follow the editor to study!

Php delete the entire element method: 1, through the "array_diff ()" function to delete the entire array element; 2, use the "array_diff_key ()" function to delete the entire element.

This article operating environment: Windows7 system, PHP7.1 version, DELL G3 computer

How does php delete the entire element?

Delete multiple elements from an array

If you want to delete multiple elements in the array, you can't use the unset () or array_splice () function, you need to use the array_diff () or array_diff_key () method, which requires you to know the key (key) or value (value) to delete.

Array_diff () method

If you know which array elements to delete, you can use array_diff ().

The output is as follows:

Array ([1] = > b)

Array_diff_key () method

If you know the key of the array element to be deleted, you can use array_diff_key (). You need to enter the key to delete in the key position of the second parameter of the function, and the value is optional.

The output is: Array ([1] = > b). At this point, the study of "how to delete an entire element by php" 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!

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