The array_keys function simply extracts the keys from the given array and returns them. The result of this function is an array containing the keys from the input array. What is the syntax of the array_keys function in PHP? Parameter Description array The array from which keys are to be extracted – Required value The …
The array_key_exists function checks if the specified key exists in the array. If the key exists, it returns true, false in case of the key is not found. What is the syntax of the array_key_exists function in PHP? Parameter Values Parameters Details key Required. Specifies the key array Required. Specifies an array array_key_exists function in …
The array_intersect_ukey function simply compares the keys of two or more arrays using the user-defined function and returns the matches. It takes the keys of the two arrays to be compared one by one and passes it to the user-defined function. The result contains an array that contains the elements whose keys are in the …
The array_intersect_uassoc function compares keys and values of two or more arrays based on a user-defined key comparison function and returns the matching results. The user-defined function takes the keys only and passes them through the user-defined logic. What is the syntax of the array_intersect_uassoc function in PHP? Parameters Details array1 The first array to …
The array_intersect_key function simply compares the first array with the other array or arrays based on keys. It returns an associative array that only contains the result against matching keys. If the key in the first array is found in the rest of the arrays, it is included in the resultant array. What is the …
The array_intersect_assoc function is an advanced version of the array_intersect function which we studied in the previous tutorial. It compares both the keys and values of two or more arrays and returns the matching result. It compares the keys and values from the first array with the keys and values of other arrays and returns …
Recall the intersection of two sets that you studied in your school life. Similarly, array_intersect compares values of two arrays and returns the common values. This function can also intersect more than two arrays. The first array is compared with the other arrays and returns the common values i.e the values that are present in …
This function provides a very interesting use case for the PHP arrays. The developer may run into a situation where swapping of keys with values or vice versa is required. array_flip() function flips all the keys with their associated values. What is the syntax of the array_flip() function in PHP? Parameter Details array The array …
The array_filter function filters the array elements based on the user-defined function. array_filter function passes each value of the array to the user-defined function. The user-defined function returns true or false. If the returned value is true, it will be kept in the output array, else it will be removed from the output as the …
In the previous tutorial, we learned about the array_fill function that simply fills an array with values. The array_fill_keys function fills an array with values against the specified keys. What is the syntax of the array_fill_keys function in PHP? Parameters Details keys An array having elements used as keys – required value Specify the value …
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