Example of deduplication of php Arrays

Example of deduplication of php Arrays

This article mainly introduces the example of de-duplicated data in php arrays. Sometimes the obtained php arrays always contain duplicate values. You can use the following method to remove duplicate data.

Repeated data starting with a number is as follows:

 

The Code is as follows:

Array (

[0] = & gt; 100

[K1] = & gt; 100

[1] => 2123.

[K2] = & gt; 2123)

 

This method can remove the value of the number as the key, first sort the array in descending order of the key, and then remove the repeated values using the array_unique method.

It cannot be used in the following scenarios: different key values have the same value.

 

The Code is as follows:

Function array_unique_value ($ arr = array ()){

Array_multisort ($ arr, SORT_DESC, array_keys ($ arr ));

Print_r (array_unique ($ arr ));

}