10 recommended articles about array_flip()

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. What the hell is going on? Let’s look at the function of array_flip(): array_flip() is used to 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 is array(30 => "age", "Happy Garden" => "name"); In PHP arrays, different elements are allowed The same value can be taken, but the same key name is not allowed to be used by different elements, such as: $arr1 = array ("age" =&

1. Details about the array_flip function Introduction

Introduction: The method is as follows: $arr = array(…………);//Assumption There are 10,000 elements in the array, and there are duplicate elements in it. $arr = array_flip(array_flip($arr)); //How to delete duplicate elements? Let’s take a look at the function of array_flip(). :array_flip() is used to exchange the key and value of each element of an array, such as: $arr1 = array ("age" => 30, "name" => "Happy Park"); $arr2 = array_flip ($arr1); //$arr2

2. 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. Use The array_flip() function will be about five times faster than array_uniqure()

##3. php uses the array_flip() function to delete duplicate elements in the array.

Introduction: Summary: In PHP, there is a function available to delete duplicate elements in an array, that 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()...

##4.

arrays.sort PHP array_flip Special function for deleting 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 names in trans become values, and the values ​​in trans become key names. 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

5.

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.

6.

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

7.

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 a reversed

8. php compares the size of values ​​in multi-dimensional arrays and sorting implementation code_PHP tutorial

Introduction: php compares the size of values ​​in multi-dimensional arrays Sorting implementation code. If there are no duplicate values, you can first use array_flip() to exchange the keys and values, then krsort(), and finally exchange them back with array_flip() to compare the sizes. If you want to intercept the array, you can

9. Analysis of the role of PHP function array_flip() in deleting duplicate array elements_PHP tutorial

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

10. 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

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