How To Retrieve Values out of an Array

Q

How To Retrieve Values out of an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations

✍: FYIcenter.com

A

You can retrieve values out of arrays using the array element expression $array[$key]. Here is a PHP example script:

<?php $languages = array(); $languages["Zero"] = "PHP"; $languages["One"] = "Perl"; $languages["Two"] = "Java"; print("Array with inserted values:\n"); print_r($languages); ?>

This script will print:

Array with default keys:
The second value: Perl

Array with specified keys:
The third value: Java

2007-04-20, 4949👍, 0💬

How to Loop through an Array
How to Loop through an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations The best way to loop through an array is to use the "foreach" statement. There are two forms of "foreach" statements: foreach ($array as $value) {} - This gives you only one temporary variable to ho... 2007-04-20, 5504👍, 0💬

Can You Add Values to an Array without a Key
Can You Add Values to an Array without a Key? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Can You Add Values to an Array with a Key? The answer is yes and no. The answer is yes, because you can add values without specifying any keys. The answer is no, because PHP will add... 2007-04-20, 5482👍, 0💬

Can You Copy an Array
Can You Copy an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations You can create a new array by copying an existing array using the assignment statement. Note that the new array is not a reference to the old array. If you want a reference variable pointing to the old arr... 2007-04-20, 5448👍, 0💬

How To Create an Array
How To Create an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations You can create an array using the array() constructor. When calling array(), you can also initialize the array with pairs of keys and values. Here is a PHP script on how to use array(): <?php print... 2007-04-20, 5304👍, 0💬

How To Create a Database
How To Create a Database? - PHP Script Tips - Working with MySQL Database A database in a MySQL server is a logical container used to group tables and other data objects together as a unit. If you are a the administrator of the server, you can create and delete databases using the CREATE/DROP DATABA... 2007-04-18, 5290👍, 0💬

What Is an Array in PHP
What Is an Array in PHP? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations An array in PHP is really an ordered map of pairs of keys and values. Comparing with Perl, an array in PHP is not like a normal array in Perl. An array in PHP is like an associate array in Perl. But an a... 2007-04-20, 5270👍, 0💬

How To Test If a Variable Is an Array
How To Test If a Variable Is an Array? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Testing if a variable is an array is easy. Just use the is_array() function. Here is a PHP script on how to use is_array(): <?php $var = array(0,0,7); print("Test 1: ". is_array($var... 2007-04-20, 5268👍, 0💬

How Values in Arrays Are Indexed
How Values in Arrays Are Indexed? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Values in an array are all indexed their corresponding keys. Because we can use either an integer or a string as a key in an array, we can divide arrays into 3 categories: Numerical Array - All ... 2007-04-20, 5106👍, 0💬

What Types of Data Can Be Used as Array Keys
What Types of Data Can Be Used as Array Keys? - PHP Script Tips - Understanding PHP Arrays and Their Basic Operations Two types of data can be used as array keys: string and integer. When a string is used as a key and the string represent an integer, PHP will convert the string into a integer and us... 2007-04-14, 5071👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.