How to remove duplicate values from a field value of php

This article mainly introduces "php a field value how to remove the duplicate value". In the daily operation, I believe that many people have doubts about how to remove the duplicate value of a php field value. The editor consulted all kinds of data and sorted out a simple and easy-to-use operation method. I hope it will be helpful for everyone to answer the doubt of "how to remove the duplicate value of a php field value". Next, please follow the editor to study!

Methods: 1, use the explode () function to divide the specified field into an array; 2, use the "array_unique" function to remove the repeated values in the array; 3, use the implode () function to combine the array that removes the duplicate values into a string.

Operating environment of this tutorial: windows10 system, PHP7.1 version, DELL G3 computer

Php how to remove the duplicate value of a field value

Explode (',', $data) splits the string into an array

The array_unique () array removes duplicate values.

Implode (',', $data)) uses the array to split and combine into strings

Examples are as follows:

$data = "xiaomi,xiaohong,xiaogang,xiaomi,xiaohu"; $data = implode (',', array_unique (explode (',', $data)); echo $data

/ / result is $data= "xiaomi,xiaohong,xiaogang,xiaohu"

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