In PHP, array is an important data type that can be used to store multiple values. In PHP, there are many ways to add array elements. Below we will introduce several commonly used methods.
1. Use the array_push() function
The array_push() function is a quick way to add one or more elements to the end of an array. For example:
$my_array = array("apple", "banana", "orange"); array_push($my_array, "grape", "kiwi"); print_r($my_array);
The output result is:
Array ( [0] => apple [1] => banana [2] => orange [3] => grape [4] => kiwi )
2. Use an array of key-value pairs
In PHP, you can also use an array of key-value pairs to add elements. For example:
$my_array = array("apple" => 1, "banana" => 2, "orange" => 3); $my_array["grape"] = 4; $my_array["kiwi"] = 5; print_r($my_array);
The output result is:
Array ( [apple] => 1 [banana] => 2 [orange] => 3 [grape] => 4 [kiwi] => 5 )
3. Use the array_merge() function
array_merge() function to merge two or more arrays. For example:
$my_array1 = array("apple", "banana", "orange"); $my_array2 = array("grape", "kiwi"); $my_array = array_merge($my_array1, $my_array2); print_r($my_array);
The output result is:
Array ( [0] => apple [1] => banana [2] => orange [3] => grape [4] => kiwi )
4. Use the [] operator to add elements
You can directly use the [] operator to add elements to the array. For example:
$my_array = array("apple", "banana", "orange"); $my_array[] = "grape"; $my_array[] = "kiwi"; print_r($my_array);
The output result is:
Array ( [0] => apple [1] => banana [2] => orange [3] => grape [4] => kiwi )
The above methods can easily and quickly add elements to the PHP array, and you can choose different methods according to different needs.
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