10 Articles about Array_flip () recommended

Here's how to do this: $arr = Array (...);//Suppose there are 10,000 elements of arrays with duplicate elements. $arr = Array_flip (Array_flip ($arr)); This allows you to remove duplicate elements. What the hell is going on here? Take a look at the role of Array_flip (): Array_flip () is used to exchange the key and value of each element of an array, such as: $arr 1 = Array ("Age" = +, "name" = "Happy Garden");　$arr 2 = array_flip ($arr 1); $arr 2 is the array ("Age", "happy garden" = "name"); In the PHP array, allow different elements to take the same value, but not allow the same key name to be used by different elements, such as: $arr 1 = Array ("Age" =&

1. A detailed introduction to the Array_flip function

Summary: The method is as follows: $arr = Array (...);//Assume that there are 10,000 elements of arrays, which have duplicate elements. $arr = Array_flip (Array_flip ($arr)); This allows you to remove duplicate elements. What the hell is going on here? Take a look at the role of Array_flip (): Array_flip () is used to exchange the key and value of each element of an array, such as: $arr 1 = Array ("Age" = +, "name" = "Happy Garden");　$arr 2 = array_flip ($arr 1); $arr 2

2. PHP array_flip () Delete array repeating elements

Summary: In PHP, there is an available function for deleting duplicate elements in an array, which is array_unique (), but it is not the most efficient method, and using the Array_flip () function will be about five times times higher than Array_uniqure ().

3. PHP removes duplicate elements from an array using the Array_flip () function

Summary: Abstract: In PHP, the deletion of duplicate elements in an array has an available function, that is array_unique (), but it is not the most efficient method, using the Array_flip () function will be more than Array_unique () at a speed of about five times times. ...

4. Arrays.sort PHP array_flip Remove Duplicate array element-specific functions

Summary: arrays.sort:arrays.sort PHP array_flip Delete Duplicate array element Private functions: 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 is the key name. Note that the value in trans needs to be able to be a valid key name, such as an integer or string. 　　If the value is of the wrong type, a warning will be issued and the problematic key/value pair will not be reversed. If the same value appears more than one

5. PHP array_flip () Delete array repeating element _php tutorial

Summary: PHP array_flip () deletes an array of repeating elements. Here's how to do this: $arr = Array (...);//Suppose there are 10,000 elements of arrays with duplicate elements. $arr = Array_flip (Array_flip ($arr)); This allows you to remove duplicate elements.

6. PHP array_flip () remove duplicate array element special function _php Tutorial

Summary: PHP array_flip () removes duplicate array element-specific functions. Description array Array_flip (array trans) Array_flip () returns a reversed array, such as the key name in trans becomes a value, and the value in trans is the key name. Note the value in trans

7. PHP Array function sequence Array_flip () swap the array key name with the value _php tutorial

Summary: PHP array function sequence Array_flip () swap the array key name with the value. Array_flip () defines and uses the Array_flip () function to swap the key name of the array with its corresponding value, that is, the key name becomes the value, and the value becomes the key name. The Array_flip () function returns a reversed

8. PHP Compare the size of the values in a multidimensional array implementation code _php tutorial

Summary: PHP compares the size of the values in a multidimensional array with the implementation code. If the value is not duplicated, you can use Array_flip () to exchange the key and the value, then Krsort (), and finally Array_flip () swap back, you can compare the size. If you want to intercept an array, you can

9. Parsing php function Array_flip () in the role of repeating array element deletion _php tutorial

Summary: Parse PHP function array_flip () in repeating array element deletion. As we all know, there are many ways to delete array elements in PHP, and the functions used frequently are PHP array_unique (). So the PHP function Array_flip () We're going to introduce to you today

Function of PHP function Array_flip () in repeating array element deletion _php tutorial

Summary: PHP function Array_flip () functions in repeating array element deletions. As we all know, PHP function array_flip () format: Arrayarray_flip (Arraytrans)//array_flip--swap keys and values in array array_flip (array trans)//array _flip--In the swap array