PHP tips: Exchange the keys and values ​​of the array to form a new array, find the value and get the key_PHP tutorial

Copy code The code is as follows:

$cityname = array_flip($city_DB[name]); //Exchange the keys and values ​​of the array A new array is formed
$city_name = array_search($city_id,$cityname,true); //Find the value and get the key

http://www.bkjia.com/PHPjc/323421.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/323421.htmlTechArticleCopy the code The code is as follows: $cityname = array_flip($city_DB[name]); //Add the keys of the array to The value exchange forms a new array $city_name = array_search($city_id,$cityname,true); //The search value is...