Use PHP's array functions to process and modify arrays
PHP is a scripting language widely used in web development. It provides a rich array of functions that can easily process and modify arrays. This article will introduce some commonly used array functions and attach code examples to help readers better understand and use these functions.
array_push() function can add one or more elements to the end of the array. Its syntax is as follows:
array_push($array, $value1, $value2, ...);
Example:
$fruits = ['apple', 'banana']; array_push($fruits, 'orange', 'grape'); print_r($fruits);
Output result:
Array ( [0] => apple [1] => banana [2] => orange [3] => grape )
array_pop() function can pop the element at the end of the array and return the popped element. Its syntax is as follows:
$lastElement = array_pop($array);
Example:
$fruits = ['apple', 'banana', 'orange', 'grape']; $lastFruit = array_pop($fruits); echo $lastFruit; // 输出:grape print_r($fruits);
Output result:
Array ( [0] => apple [1] => banana [2] => orange )
$firstElement = array_shift($array);
$fruits = ['apple', 'banana', 'orange', 'grape']; $firstFruit = array_shift($fruits); echo $firstFruit; // 输出:apple print_r($fruits);
Array ( [0] => banana [1] => orange [2] => grape )
array_unshift($array, $value1, $value2, ...);
$fruits = ['banana', 'orange', 'grape']; array_unshift($fruits, 'apple', 'kiwi'); print_r($fruits);
Array ( [0] => apple [1] => kiwi [2] => banana [3] => orange [4] => grape )
$reversedArray = array_reverse($array);
$fruits = ['apple', 'banana', 'orange', 'grape']; $reversedFruits = array_reverse($fruits); print_r($reversedFruits);
Array ( [0] => grape [1] => orange [2] => banana [3] => apple )
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