How to add elements to array in PHP
Can. In PHP, an array is a variable that contains one or more elements that can be accessed by index or associated key.
If you want to add an element to an array in PHP, there are two common ways:
- Add an element using the index specified by the array
Using an array The most common way to add elements by index is to use the following syntax:
$array_name[index] = value;
where $array_name is the name of the array variable and index is the element to be added The index value of , value is the value of the element to be added.
For example, the following code will add three color elements to an array named $colors:
$colors = array(); $colors[0] = "Red"; $colors[1] = "Green"; $colors[2] = "Blue";
- Add elements using associated keys
Adding elements using associated keys is another common way to add elements in PHP. The association key is a string that identifies the name of a specific element in the array. Relevant key elements can be added using the following syntax:
$array_name[key] = value;
where $array_name is the name of the array variable, key is the name of the element to be added, value is the value of the element to be added.
For example, the following code will add three associated key elements of person information to an array named $person:
$person = array(); $person["name"] = "John Smith"; $person["age"] = 35; $person["city"] = "New York";
Summary
In There are two common ways to add elements to an array in PHP: adding an element using an index specified by the array or adding an element using an associated key. Using array indexing is the most common way, and allows you to add any number of elements to an array with a simple syntax. Adding elements using associated keys is more suitable when you need to add elements with specific names. No matter which method you use, you can easily add elements to a PHP array.
The above is the detailed content of How to add elements to array in PHP. For more information, please follow other related articles on the PHP Chinese website!
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