Example to reverse the key names in the array and the corresponding associated key values: "red","b"=>"green","c"=>"blue","d"=>"yellow"); $result=array_flip($a1); print_r($result); ?>Definition and usage The array_flip() function is used to reverse/exchange the key names in the array and the corresponding associated key values. Syntax array_flip(array); Parameter description array is required. Specifies the array whose key/value pairs need to be reversed. Technical details Return value: If the inversion is successful, the reversed array is returned. If the reversal fails, NULL is returned. PHP version: 4 Note that the value in trans needs to be a legal key name, for example
Introduction: The array_flip() function is used to reverse/exchange the key names in the array and the corresponding associated key values. If the reversal is successful, the reversed array is returned. If the reversal fails, NULL is returned.
2. php array_flip(Function to delete duplicate elements from array Detailed example example
Introduction: In PHP, used for There is a function available to delete duplicate elements in an array, which is array_unique(), but it is not the most efficient method. Using the array_flip() function will be about five times faster than array_unique() #.
##3. 10 recommended articles about flip()
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10 recommended articles about array_flip()
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Detailed introduction to the array_flip function
Introduction: The method is as follows: $arr = array(…………);//Assume there are 10,000 elements There are duplicate elements in the array. $arr = array_flip(array_flip($arr)); //This way you can delete duplicate elements. Let’s look at the function of array_flip(): Exchange the key and value of each element of an array, such as: $arr1 = array ("age" => 30, "name" => "Happy Garden"); $arr2 = array_flip($arr1);/ /$arr2
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php array_flip() Delete duplicate elements from the array 
##Introduction: In PHP, there is a function available for deleting duplicate elements in an array, which is array_unique(), but it is not the most efficient method. Using the array_flip() function will be better than array_uniqure() is about five times faster.
7. php uses the array_flip() function to delete duplicate elements in the array
Introduction: Summary: In PHP, there is an available function to delete duplicate elements in an array, which is array_unique(), but it is not the most efficient method. Using the array_flip() function will be better than array_unique() About five times faster. ...
8. arrays.sort PHP array_flip special function to delete duplicate array elements
Introduction: arrays. sort:arrays.sort PHP array_flip special function for deleting duplicate array elements: Description array array_flip (array trans) Array_flip() returns a reversed array, for example, the key name in trans becomes the value, and the value in trans becomes Key name. Note that the value in trans needs to be a legal key name, for example, it needs to be integer or string. A warning will be emitted if the value is of the wrong type, and the key/value pair in question will not be reversed. If the same value appears multiple times
9. array_slice and array_flip in php array functions
Introduction:: array_slice and array_flip in php array functions: Let’s look at array_slice first. The function of array_slice is to take out a part of the array. There are two ways to use it: $arr=array(a=>aa,b=>bb,c=>cc ,d=>dd);//Starting from the first data in the array (the array itself starts from 0), take two items. $tmp=array_slice($arr,1,2); showObj($tmp); //Start from the third last data in the array and take the next two items: $tmp=array_sl
10. php array_flip() Delete duplicate elements from array_PHP tutorial
Introduction: php array_flip() removes duplicate elements from an array. The method is as follows: $arr = array(…………);//Suppose there is an array of 10,000 elements with repeated elements. $arr = array_flip(array_flip($arr)); //This will remove duplicate elements.
11. PHP array_flip() Special function to delete duplicate array elements_PHP tutorial
Introduction: PHP array_flip( ) Special function for removing duplicate array elements. Description array array_flip (array trans) array_flip() returns a reversed array, for example, the key names in trans become values, and the values in trans become key names. Pay attention to the value in trans
12. php array function sequence array_flip() swaps the array key name and value_PHP tutorial
Introduction: PHP array function sequence array_flip() swaps the array key names and values. array_flip() Definition and Usage The array_flip() function will swap the keys of an array with their corresponding values, that is, the keys become values, and the values become keys. The array_flip() function returns an inverted value
Introduction: Analyze the role of PHP function array_flip() in deleting duplicate array elements. We all know that there are many ways to delete array elements in PHP. The commonly used function is array_unique() in PHP. So the PHP function array_flip() we introduce to you today is in
14. The role of PHP function array_flip() in deleting duplicate array elements_PHP tutorial
Introduction: The role of PHP function array_flip() in deleting duplicate array elements. We all know that the PHP function array_flip() format: arrayarray_flip(arraytrans) //array_flip--Exchange the keys and values in the array array array_flip (array trans) //array_flip--Exchange the array
15. php-Arrays function-array_flip-exchange the keys and values in the array_PHP tutorial
Introduction: php-Arrays function-array_flip-exchange array Middle keys and values. The array_flip() function exchanges the keys and values in the array [Function] This function will return a reversed array, that is, the values of the original array become the key values of the new array, and the key values of the original array become the new
16. php array_flip() and array_uniqure() to remove duplicate elements from an array_PHP Tutorial
Introduction: php array_flip() and array_uniqure() remove duplicate elements from the array. There are several functions to delete duplicate elements from an array in PHP. One is array_unique() and the other is array_flip() and array_uniqure() functions, but the latter is several times more performant than the former, so I will only introduce
17. How to learn PHP array_flip()_PHP tutorial
Introduction: How to learn PHP array_flip(). How to learn PHP array_flip() Definition and Usage The array_flip() function returns a reversed array. If the same value appears multiple times, the last key name will be its value, and all other
18. Codeforces Round #191 (Div. 2)-A. Flipping Game_html/css_WEB-ITnose
Introduction: Codeforces Round #191 (Div. 2)-A. Flipping Game
19. CSS3 to achieve flipping (Flip) effect_html/css_WEB-ITnose
Introduction: CSS3 realizes flip effect
20. CSS3 animation (3): transform realizes multi-flip animation_html/css_WEB-ITnose
Introduction: CSS3 animation (3): transform implements multi-flip animation
21. php array_flip() deletes duplicate elements from the array
Introduction: php array_flip() removes duplicate elements from an array. The method is as follows: $arr = array(…………);//Suppose there is an array of 10,000 elements with repeated elements. $arr = array_flip(array_flip($arr)); //This will remove duplicate elements.
22. php array function sequence array_flip() swaps the array key name and value
Introduction: php The array_flip() array function sequence swaps the array key names and values. array_flip() Definition and Usage The array_flip() function will swap the keys of an array with their corresponding values, that is, the keys become values, and the values become keys. The array_flip() function returns an inverted value
23. Analysis of the role of the PHP function array_flip() in deleting duplicate array elements
Introduction: Analyze the role of PHP function array_flip() in deleting duplicate array elements. We all know that there are many ways to delete array elements in PHP. The commonly used function is array_unique() in PHP. So the PHP function array_flip() we introduce to you today is in
24. The role of PHP function array_flip() in deleting duplicate array elements
Introduction: The role of PHP function array_flip() in deleting duplicate array elements. We all know that the PHP function array_flip() format: arrayarray_flip(arraytrans) //array_flip--exchange the keys and values in the array array array_flip (array trans) //array_flip--exchange the array
25. php-Arrays function-array_flip-exchange the key and value in the array
Introduction: php-Arrays function-array_flip-exchange the key and value in the array value. The array_flip() function exchanges the keys and values in the array [Function] This function will return a reversed array, that is, the values of the original array become the key values of the new array, and the key values of the original array become the new
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