Detailed introduction to string sorting

Our last article talked about "How to delete the head, tail, and any element in a PHP array." In this article, we talk about deleting duplicate elements in the array through the array_unique() function. The array_unique() function sorts the values ​​of the array elements as strings, and then only retains the first key name for each value and ignores all subsequent key names, which is to delete duplicate elements in the array. The syntax format is as follows: array arry_unique( array array) The parameter array is the input array. The following example uses the array_unique() function to delete duplicate elements in the array. The specific example code is as follows:

1. 10 recommended articles about the php array_unique() function

Introduction: Our previous article talked about "How to delete the head, tail, and any element in a PHP array", this article We talk about deleting duplicate elements in the array through the array_unique() function. The array_unique() function sorts the values ​​of the array elements as strings, and then only retains the first key name for each value and ignores all subsequent key names, which is deletion. Duplicate elements in the array, the syntax format is as follows: array arry_unique(array array) The parameter array is the input array...

2. How to delete elements in a PHP array Repeating elements

Introduction: array_unique() function, sorts the values ​​of the array elements as strings, and then Only retain the first key name for each value and ignore all subsequent key names, which is to delete duplicate elements in the array,

3. JavaScript Fun Question: String Sorting

Introduction: First, split the given string according to spaces. After all, arrays are smaller than strings Easier to operate. Then formulate a sorting rule, whichever word contains a larger number will be ranked lower. array_unique of php array function sequence - remove from the array. Duplicate element values ​​

#Introduction:: PHP array function sequence array_unique - remove duplicate element values ​​​​in the array: array_unique() Definition and usage array_unique() function removes the array Duplicate values ​​in the array, and return the result array. When the values ​​of several array elements are equal, only the first element is retained, and the key names in the returned array are unchanged. Syntax array_unique(array) Parameter description. array Required. Specifies the input array. Description array_unique() first sorts the values ​​as strings, then only retains the first encountered key name for each value, then ignores

## 5. uniqueid php determines whether the same value exists in the array array_unique

Introduction: uniqueid:uniqueid php determines whether the same value exists in the array array_unique: array_unique (PHP 4 >= 4.0.1, PHP 5) array_unique -- Remove duplicate values ​​from an array Description array array_unique ( array array ) array_unique() accepts an array as input and returns a new array without duplicate values. Note that the key names remain unchanged. array_unique() first sorts the values ​​as strings, then only retains the first encountered key name for each value, and then

Introduction: This article mainly introduces the Python string sorting method, which is based on lambda implementation. It is a very practical skill. Friends in need can refer to it

7. php array_unique json_encode precautions after processing

Introduction: ec(2); PHP tutorial json_encode precautions after array_unique processing array_unique() sorts the values ​​first as strings, then retains only the first encountered key for each value, and then ignores all subsequent keys. This does not mean that the first occurrence of the same value in an unsorted array will be preserved. For example: array_unique(array(1, 1, 2)); ] His result is array(2) { [0]

8. sql varchar sorting CAST/CONVERT implementation statement

Introduction: The article introduces the When using ordinary sorting to sort data, we find that varchar string sorting cannot get the results we want. Let's introduce the use of case or convert to solve this problem.

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