Summarize the key points to note about key names and key values

These 5 functions for obtaining the intersection have 5 corresponding functions for obtaining the difference set. I am the link. array_intersect($arr1, $arr2); //Get the intersection of the same key value in the array array_intersect_key($arr1, $arr2); //Get the intersection of arrays with the same key name array_intersect_assoc(same as above); //Get the intersection of the key values ​​of the array with the same key name array_intersect_uassoc(same as above, 'custom callback function'); //Use a custom callback function to obtain the intersection of the key values ​​of the array with the same key name array_intersect_ukey (same as above, custom callback function); //Use a custom callback function to obtain the intersection of data with the same key name 1 $arr1 = array('r' => 'red','u' => 'blue'

1. Detailed introduction to the array_intersect_ukey function

##Introduction: These 5 functions for obtaining the intersection have 5 corresponding functions for obtaining the difference set. I am a link. array_intersect($arr1, $arr2);//Get the intersection of arrays with the same key value array_intersect_key($arr1, $arr2);//Get the intersection of the array with the same key name array_intersect_assoc (same as above);//Get the array with the same key name key value The intersection of array_intersect_uassoc (same as above, 'custom...

2. Android programmers learn PHP development (23) - array operation related functions (1) key name key value Chapter - PhpStorm

How to reset the array key name and key value

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