Posted By
Bajarangi soft ,
Posted On 16-09-2020
Array
for example
If you have collection of items and that storing in single variables:
$birds_1="crow";
$birds_2="peacock";
$birds_3="sparrow";
if we have 100 of birds we can not declare new variable for every birds so to over come this problem. we use array in one $birds variable we can store all collection of birds in it.
Create an array in php
array();
$birds = array("crow", "peacock", "sparrow");//define array
There are three types of arrays:
Example for Indexed arrays:
<?php
// Define an indexed array
$birds = array("crow", "peacock", "sparrow");
?>
or
<?php
$birds[0] = "crow";
$birds[1] = "peacock";
$birds[2] = "sparrow";
?>
Example for Associative arrays:
<?php
// Define an associative array
$bike = array("bike-1"=>22, "bike-2"=>32, "bike-3"=>28);
?>
or
<?php
$bike["bike-1"] = "22";
$bike["bike-2"] = "32";
$bike["bike-3"] = "28";
?>
Example for Multidimensional arrays:
<?php
// Define a multidimensional array
$details = array(
array(
"name" => "john Parker",
"dob" => "1998/05/01",
"email" => "johnparker@mail.com",
),
array(
"name" => "jeo",
"dob" => "1997/06/11",
"email" => "jeo@mail.com",
),
array(
"name" => "Harry",
"dob" => "1995/04/18",
"email" => "harry@mail.com",
)
);
// Access nested value
echo "john Parker's Email-id is: " . $details[0]["email"];
?>
Displaying Array Structure and Values:
the structure and values of any array by using one of two statements — var_dump() or print_r().
for example:
<?php
$birds = array("crow", "peacock", "sparrow");
print_r($birds);
?>
We can also get the length of an Array using count() Function
The count() function is used to return the length of an array:
<?php
$birds = array("crow", "peacock", "sparrow");
echo count($birds);
?>
Complete Code of An Array:
<!DOCTYPE html>
<html>
<head>
<title>array and its types in php</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="text-center">
<h1>Array and its types in PHP</h1>
</div>
<br>
<br>
<br>
<h2>An array is a data structure that stores one or more similar type of values in a single variable.</h2>
<div class="well">
<?php
$birds = array("crow", "peacock", "sparrow");
echo "<p>length of array elements</p>".count($birds);
echo "<br>";
echo "<br>";
print_r($birds);
?>
</div>
<br>
</div>
</body>
</html>