How to add data to a new array in php

PHP is a widely used server-side scripting language used for web development and building dynamic websites. In PHP programming, we often need to add data to a new array to facilitate various operations. This article will introduce how to add data to a new array in PHP.

Method 1: Use the array_push() function

The array_push() function is used to add one or more elements to the end of the array. This function returns the new length of the updated array.

Syntax:

array_push(array, value1, value2, ...)

Among them, array represents the array to which elements need to be added; value1, value2, ... represents the elements that need to be added to the array.

Example:

<?php

$students = array(&#39;Tom&#39;, &#39;John&#39;, &#39;Peter&#39;);

array_push($students, &#39;Lucy&#39;, &#39;James&#39;);

print_r($students);

?>

Output result:

Array
(
    [0] => Tom
    [1] => John
    [2] => Peter
    [3] => Lucy
    [4] => James
)

Method 2: Use the " " operator

In PHP, you can use the " " operator to Merge two arrays into a new array. If the same key name exists in two arrays, the elements in the second array will overwrite the elements in the first array.

Syntax:

$array = $array1 + $array2;

Among them, $array1 and $array2 are the two arrays to be merged.

Example:

<?php

$students1 = array(&#39;Tom&#39;, &#39;John&#39;, &#39;Peter&#39;);
$students2 = array(&#39;Lucy&#39;, &#39;James&#39;);

$students = $students1 + $students2;

print_r($students);

?>

Output result:

Array
(
    [0] => Tom
    [1] => John
    [2] => Peter
    [3] => Lucy
    [4] => James
)

Method 3: Direct assignment

In PHP, you can directly assign an element to a new array A specified key name. If the key name already exists, the element corresponding to the key name is overwritten.

Example:

<?php

$students = array();

$students[&#39;English&#39;] = &#39;Tom&#39;;
$students[&#39;Math&#39;] = &#39;John&#39;;
$students[&#39;Science&#39;] = &#39;Peter&#39;;

print_r($students);

?>

Output result:

Array
(
    [English] => Tom
    [Math] => John
    [Science] => Peter
)

The above are the three methods of adding data to a new array in PHP. Choosing the appropriate method according to actual needs can operate the array more efficiently.

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