How to remove first and last element from php array

PHP's array is a very commonly used data structure and provides very convenient operation methods. If you need to remove the first and last elements in a PHP array, you can use PHP's built-in functions to do it.

To remove the first element from an array, you can use PHP's array_shift() function, which pops out the first element in the array and returns it. Therefore, you can use PHP's array_pop() function to pop out the last element after popping the first element.

The following is the specific code implementation:

//定义数组
$arr = array('a', 'b', 'c', 'd', 'e');

//弹出第一个元素
array_shift($arr);

//弹出最后一个元素
array_pop($arr);

//输出结果
print_r($arr);

The above code will output the following results:

Array
(
    [0] => b
    [1] => c
    [2] => d
)

As you can see, the first element 'a' in the array and the last An element 'e' has been removed.

It should be noted that this method will change the contents of the original array. If you do not want to change the original array, you can use PHP's array_slice() function to extract the required parts to form a new array.

The following is the specific code implementation:

//定义数组
$arr = array('a', 'b', 'c', 'd', 'e');

//构造新的数组
$newArr = array_slice($arr, 1, -1);

//输出结果
print_r($newArr);

The above code will output the following results:

Array
(
    [0] => b
    [1] => c
    [2] => d
)

This method does not change the content of the original array, but returns a new array.

To sum up, PHP provides a variety of methods to remove the first element and the last element in the array. You can choose different methods according to the actual situation.

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