In PHP, sometimes we need to remove elements at specific positions from an array. At this time, we can use array subscripts to get an element in the array.
PHP array subscripts start from 0, that is, the subscript of the first element is 0, the subscript of the second element is 1, and so on.
Getting out the first element of the array is to get the element with a specific subscript. Here are two ways to get array elements.
Method 1: Using array subscripts
It is very simple to use array subscripts to obtain elements. You only need to add square brackets after the array name and fill in the element subscript in the square brackets. . For example:
$fruits = array('apple', 'banana', 'orange', 'peach'); $second_fruit = $fruits[1]; // 获取第二个元素,即 banana
In the above code, we use $fruits[1]
to get the second element banana# in the array
$fruits ## and assign it to the variable
$second_fruit.
array_slice function to get specific elements in the array. The syntax of this function is as follows:
array array_slice ( array $array , int $offset [, int $length = NULL [, bool $preserve_keys = false ]] )Among them,
$array represents the array to be operated on,
$offset represents the subscript of the first element to be obtained,
$length indicates the number of elements to be obtained (optional, the default is the array length minus
$offset),
$preserve_keys indicates whether to retain the key names of the original array (optional, defaults to false).
$fruits array, you can use the following code:
$fruits = array('apple', 'banana', 'orange', 'peach'); $sliced_fruits = array_slice($fruits, 1, 3);In the above code, we use
array_slice($fruits, 1, 3) obtains the second to fourth elements in the
$fruits array, namely
banana,
orange and
peach and assign them as a new array to the
$sliced_fruits variable.
array_slice function can obtain a specific range of array elements as needed. It should be noted that when using any method, you need to ensure the validity of the subscript to be obtained.
The above is the detailed content of php takes out the number of the array. For more information, please follow other related articles on the PHP Chinese website!

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