PHP

The array_reverse() function returns an array in the reverse order. We can use the array_reverse() function to reverse the order of the array elements. It returns an array with items in reverse order. PHP array_reverse The array_reverse() is a built-in PHP function used to reverse the elements of an array, including the nested arrays. The … Read more

The sort() function is used to sort the array in ascending order, i.e., smaller to greater. The elements are reordered from lowest to highest when the sort() function is applied to an array. PHP sort PHP sort() is a built-in function that deals with sorting arrays, and this document exists to help sort it all out. … Read more

Key-value associations become essential when you are dealing with associative arrays. The ksort() function is useful mainly for associative arrays. One of PHP’s most robust data types is an array. It can hold numbers and contain characters; it can be sliced, sorted, and chunked. The specific sorting functions are only for sorting by the keys … Read more

The variable is considered empty if it does not exist or its value equals FALSE. The empty() does not generate a warning if the variable does not exist. How to Check If a Variable is Empty in PHP To check if a variable is empty in PHP, use the empty() function. The empty() is a … Read more

The isset() function is used to check whether a variable is set or not. If the variable is already unset with the unset() function, it will no longer be set. PHP isset PHP isset() is a built-in function that checks whether a variable is set and is not NULL. The isset() function returns false if … Read more

PHP array_key_exists() function to test whether a given key or index exists in an array or not. The array_key_exists() function returns TRUE on success or FALSE on failure. PHP array_key_exists PHP array_key_exists() is a built-in function that checks the array for a particular key, returns a true value if the key exists, and returns a … Read more

PHP array_product() is an inbuilt function and is used to find the products of all the items in the array. PHP array_product() PHP array_product() is an inbuilt function that calculates and returns the product of an array. The array_product() can be used to test if all values in an array of booleans are TRUE.   … Read more

The array_udiff() function uses the user-defined function to compare the values. The function compares the values of two (or more) arrays and returns the array that contains the elements from array1 that are not present in array2 or array3, etc. PHP array_udiff The array_udiff() is the built-in function to distinguish between two or more arrays. The array_udiff() … Read more

The array_fill_keys() function fills an array with values, specifying keys. PHP array_fill_keys PHP array_fill_keys() is a built-in function that fills an array with values, specifying keys. The array_fill_keys() function is used to create the new array filled with the given keys and value provided as the array to a function. Syntax See the following syntax. … Read more

The array_intersect_key() function creates an array containing keys and values of the first array whose keys. PHP array_intersect_key PHP array_intersect_key() is a built-in function that compares the keys of two (or more) arrays and returns the matches. The function compares the keys of two or more arrays and returns the array that contains the items from … Read more

PHP array_intersect() is a built-in function that compares the values of two arrays and returns the matches. The array_intersect() function compares the values of two or more arrays and returns the array that contains the entries from array1 that are present in the array2, array3, etc. PHP array_intersect The array_intersect() built-in PHP function computes an intersection … Read more