Detailed introduction to array_diff_ukey function

Definition and usage The array_diff_ukey() function is used to compare the key names of two (or more) arrays and return the difference. Note: This function uses a user-defined function to compare key names! This function compares the keys of two (or more) arrays and returns a difference array that includes all the keys in the compared array (array1) but not in any of the other argument arrays (array2 or array3, etc. ) in the key name. Syntax array_diff_ukey(array1,array2,array3...,myfunction); parameter description array1 is required. The first array to compare with other arrays. array2 is required. The array to compare to the first array. array3,... Optional. Other arrays to compare with the first array &nb

1. PHP array_diff_ukey() function definition and usage

Introduction: Definition and Usage The array_diff_ukey() function is used to compare the key names of two (or more) arrays and return the difference. Note: This function uses a user-defined function to compare key names! This function compares the keys of two (or more) arrays and returns a difference array that includes all keys in the compared array (array1) but not in any of the other argument arrays (array2 or array3, etc. ) in the key name. Syntax

2. php-Arrays function-array_diff_ukey-Use callback function to compare key names to calculate the difference set of array_PHP tutorial

Introduction: php-Arrays function-array_diff_ukey-uses the callback function to compare key names to calculate the difference set of the array. The array_diff_ukey() function uses the callback function to compare the key names to calculate the difference set of the array [Function] This function will return an array that contains everything in array1 but not in any other

3. How to learn PHP array_diff_ukey()_PHP tutorial

Introduction: How to learn PHP array_diff_ukey(). How to learn PHP array_diff_ukey() Definition and Usage array_diff_ukey() returns an array containing all keys that appear in array1 but do not appear in any other parameter array

4. php-Arrays function-array_diff_ukey-use callback function to compare key names to calculate the difference set of the array

Introduction: php-Arrays function-array_diff_ukey-use callback function to compare Key name comparison calculates the difference of arrays. The array_diff_ukey() function uses the callback function to compare the key names to calculate the difference set of the array [Function] This function will return an array that contains everything in array1 but not in any other

5. How to learn PHP array_diff_ukey()

Introduction: How to learn PHP array_diff_ukey(). How to learn PHP array_diff_ukey() Definition and Usage array_diff_ukey() returns an array that includes all keys that appear in array1 but do not appear in any other parameter array

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