Associative Arrays
Associative arrays in PHP are arrays that provide a mapping between keys and values. They are used to store data in the form of key-value pairs, where each key is unique and associated with a specific value.
Creation Syntax
Associative arrays are created using the key operator => to establish the relationship between the key and the value. For example:
main.php
12345$user = [ "name" => "John", "age" => 30, "city" => "New York" ];
As a result, this code creates an associative array $user with three keys: "name", "age", and "city", and their corresponding values: "John", 30, and "New York". You can access these values using their respective keys:
main.php
123456789<?php $user = array( "name" => "John", "age" => 30, "city" => "New York" ); echo $user["name"]; // Output "John" ?>
Swipe to start coding
Fill in the blanks in the code to create an associative array $person with three key-value pairs (e.g., 'name' => 'John', 'age' => 25, 'profession' => 'Engineer'). Then, access the value by the key 'name' and print it to the screen.
Ratkaisu
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Can you show me how to create an associative array in PHP?
How do I access a value from an associative array using its key?
Can you explain more about the key-value relationship in associative arrays?
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Completion rate improved to 4.35Associative Arrays
Pyyhkäise näyttääksesi valikon
Associative arrays in PHP are arrays that provide a mapping between keys and values. They are used to store data in the form of key-value pairs, where each key is unique and associated with a specific value.
Creation Syntax
Associative arrays are created using the key operator => to establish the relationship between the key and the value. For example:
main.php
12345$user = [ "name" => "John", "age" => 30, "city" => "New York" ];
As a result, this code creates an associative array $user with three keys: "name", "age", and "city", and their corresponding values: "John", 30, and "New York". You can access these values using their respective keys:
main.php
123456789<?php $user = array( "name" => "John", "age" => 30, "city" => "New York" ); echo $user["name"]; // Output "John" ?>
Swipe to start coding
Fill in the blanks in the code to create an associative array $person with three key-value pairs (e.g., 'name' => 'John', 'age' => 25, 'profession' => 'Engineer'). Then, access the value by the key 'name' and print it to the screen.
Ratkaisu
Vaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoistaKiitos palautteestasi!
Awesome!
Completion rate improved to 4.35single
