The function of removing the first element and the last element of an array in PHP _php tips

For a PHP array, how do you delete the first element or the last element of the array? In fact, these two processes can be done with the functions of PHP array_pop and Array_shift to complete, the following is a specific description of how to operate.

(1) Use Array_pop to delete the last element of the array, for example:

$user =array (' Apple ', ' banana ', ' orange ');
$result =array_pop ($user);
Print_r ($result);
Print_r ($user);

The result will be:

Orange
Array (' Apple ', ' banana ')

(2) Use Array_shift to delete the first element of an array, for example:

$user =array (' Apple ', ' banana ', ' orange ');
$result =array_shift ($user);
Print_r ($result);
Print_r ($user);

The result will be:

Apple
Array (' banana ', ' orange ')

In fact, the first element that deletes an array can also use the Array_splice function, which is:

Copy Code code as follows:

$user =array_splice ($user, 1); Delete the first element of the array, notice that the new array is returned at this time

Here's a simple explanation for Array_pop and Array_shift:

Array_pop () pops up and returns the last cell of the array, minus one of the array lengths. If the array is empty (or not an array), it returns NULL.

Array_shift () Moves the first cell of the array out and returns as the result, reducing the length of the array to move all other cells forward one bit. All numeric key names are changed from zero, and the text key is unchanged. Returns null if the array is empty (or not an array).