10 recommended articles about php array_udiff() function

PHP function array_udiff function to solve the problems encountered in the usecode = intval($code); } public function getCode() { return $this->code; } /*** This function must return three values: 0, 1, -1 according to the actual situation in order to correctly calculate the difference set ​*/ public&nbs

1. Solution to problems encountered when using PHP function array_udiff function

Introduction: This article describes the solutions to problems encountered in the use of the PHP function array_udiff function, which has certain reference value. Let’s take a look at it together

##2. php array_udiff_assoc Calculate the difference set example of two arrays

##Introduction: This article mainly introduces php Array_udiff_assoc calculates the relevant information of the difference set instance of two arrays. Friends who need it can refer to

##3.

The puzzle of array_udiff

Introduction: Confusion about array_udiff I was reading a book today, and there was an example in the book that used array_udiff. I checked the manual, and after testing, I still don’t know much about it. $a = array(1,2,3,4,5); $b = array(1,6,3,4,5); echo "

";
print_r(array_udiff($a,$b

4. 
array_udiff’s confusion
Introduction: array_udiff’s confusion today Reading, there is an example in the book that uses array_udiff, I checked the manual, and after testing, I still know little about it. $a = array(1,2,3,4,5);$b = array(1,6,3 ,4,5);echo "
";print_r(array_udiff($a,$b,fu

##5. Questions about array_udiff_assoc and array_intersect_ukey?

Introduction: I have trouble memorizing functions at home. Please help me! I would also like to ask: {Code...} The above example: The health name and health value use two different callback functions at the same time. One positive value is 1, and the other positive value is 0. Only positive or negative values ​​will be output or returned. 0 will not lose...
6. php array_udiff working principle
Introduction: php array_udiff I really don’t understand the working principle, especially the callback function. {Code...} What are the parameters of each callback function? I print it out, but it is not as expected. The value of each element of $arr1 is directly Compare with each element value of $arr2, but {code...} callback...
7. How to find the difference of an array of PHP objects? 
Introduction: Page 159 of "In-depth PHP Object Orientation, Patterns and Practice" has the following code. Here is a demonstration of the combination mode, and the array_udiff function is used in the removeUnit method. The author's original intention is to remove the $unit object from the $units attribute. I tried it and found that it doesn't work. The key lies in $...
8. php callback. Function 
Introduction: Many functions in PHP support callback functions. For example: array_udiff, array_usort callback function. The function needs to pass in a callback type as its parameter. The official document clearly states that There are 6 supported methods of passing in callback function parameters: 1. Ordinary global methods 2. Object methods, passing in arrays as parameters 3. Static method calls, passing in arrays as parameters 4
[Related Q&A recommendations]:
php - Questions about array_udiff_assoc and array_intersect_ukey? 
php array_udiff working principle
How to find the difference in an array of PHP objects? 
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