Day 6 - Associative Array - Become PHP Expert in 30 days

[admin]

Associative Array

On Day 5, we learned about Array. Today we will learn some advanced Arrays.



day_6_array_1.php

<?php

$iceCream = array();

$iceCream['name'] = 'Fudge Brownie Ice Cream';
$iceCream['price'] =  50;
$iceCream['available'] = 'yes';
$iceCream['supplier'] = 'Uncle John';

// Lets see what is in the array.

echo '<pre>';
print_r($iceCream);
echo '</pre>';

// To print value stored in associative array, we use names instead of number.

echo '<h1>Product Details</h1>';
echo '<b>Name:</b> '  . $iceCream['name']  . '<br>';
echo '<b>Price:</b> Rs: '  . $iceCream['price']  . '/-<br>';
echo '<b>Supplier:</b> '  . $iceCream['supplier']  . '<br>';
echo '<b>In Stock:</b> '  . $iceCream['available']  . '<br>';

The the code

$iceCream = array();

creates an empty array.


Multi Dimensional Array

You can store an array inside an array. For example, in previous example, we have an array that store information about an ice cream. What if we need to store information about more than one ice cream ?

$iceCream variable store information about one ice cream. Lets create another variable $iceCreams (plural form for $iceCream, notice "s" at the end of variable name).

day_6_array_2.php

<?php

$iceCreams = array();

$iceCream1 = array();

$iceCream1['name'] = 'Fudge Brownie Ice Cream';
$iceCream1['price'] =  50;
$iceCream1['available'] = 'yes';
$iceCream1['supplier'] = 'Uncle John';

$iceCream2 = array();

$iceCream2['name'] = 'Chocolate Ice Cream';
$iceCream2['price'] =  40;
$iceCream2['available'] = 'yes';
$iceCream2['supplier'] = 'Amul';

$iceCream3 = array();

$iceCream3['name'] = 'Movenpick Ice Cream';
$iceCream3['price'] =  80;
$iceCream3['available'] = 'no';
$iceCream3['supplier'] = 'Dairy Queen';


$iceCreams[] = $iceCream1;
$iceCreams[] = $iceCream2;
$iceCreams[] = $iceCream3;

/*

// Lets print_r() the array

echo '<pre>';
print_r($iceCreams);
echo '</pre>';

*/

// Lets list icecreams more user friendly way using foreach

echo '<h1>Menu</h1>';

foreach ($iceCreams as $iceCream) {
    echo '<hr>';
    echo '<b>Name:</b> '  . $iceCream['name']  . '<br>';
    echo '<b>Price:</b> Rs: '  . $iceCream['price']  . '/-<br>';
    echo '<b>Supplier:</b> '  . $iceCream['supplier']  . '<br>';
    echo '<b>In Stock:</b> '  . $iceCream['available']  . '<br>';

    if ($iceCream['available'] == 'yes') {
        echo '<p>Product in stock, buy it before it melt away.</p>';
    }
}

echo '<hr>'; // <hr> draw a line in your browser, thanks to HTML.

/* and */ are multi line comment in PHP. Anything side that won't get executed. If you want to see raw data stored in array, find

/*

// Lets print_r() the array

echo '<pre>';
print_r($iceCreams);
echo '</pre>';

*/

Replace it with

// Lets print_r() the array

echo '<pre>';
print_r($iceCreams);
echo '</pre>';

It is very important to understand use of associative array. It is not that complicated. We don't do complex codes, we keep our codes simple, so it is easily maintainable.

Exercise

1. Use strtolower() function to ice cream name to lower case.
2. Use strtoupper() function to change ice cream name to upper case.

[annie]

http://php.flashwebhost.com/annie/refrigerator.php

<?php

$refrigerator = array();

$refrigerator[ 'name' ] = 'Whirlpool refrigerator';
$refrigerator[ 'price' ] = 9500;
$refrigerator[ 'availabile' ] = 'yes';
$refrigerator[ 'supplier' ] = 'Bismi Home Appliance';

echo '<pre>';
print_r($refrigerator);
echo '</pre>';

echo '<h1>Product Details</h1>';
echo '<b> Name: </b> ' . $refrigerator[ 'name' ] . '<br>';
echo '<b> Price: </b> ' . $refrigerator[ 'price' ] . '/-<br>';
echo '<b> In Stock: </b> ' . $refrigerator['availabile' ] . '<br>';
echo '<b> Supplier: </b> ' . $refrigerator[ 'supplier' ] . '<br>';

[sherlyk]

http://php.flashwebhost.com/sherly/laptop.php

 <?php

$lapTop = array();

$lapTop['name'] = 'Toshiba Laptop';
$lapTop['price'] =  25000;
$lapTop['available'] = 'yes';
$lapTop['supplier'] = 'Toshiba Company';

// Lets see what is in the array.

echo '<pre>';
print_r($lapTop);
echo '</pre>';

// To print value stored in associative array, we use names instead of number.

echo '<h1>Product Details</h1>';
echo '<b>Name:</b> '  . $lapTop['name']  . '<br>';
echo '<b>Price:</b> Rs: '  . $lapTop['price']  . '/-<br>';
echo '<b>Supplier:</b> '  . $lapTop['supplier']  . '<br>';
echo '<b>In Stock:</b> '  . $lapTop['available']  . '<br>';

[admin]

@annie and @sherlyk Good examples. That is single dimensional associated array. Try multi dimensional array.

[Vahaa11]

http://php.flashwebhost.com/sibichan/Day-6/day_6_array_1.php

<?php

$company = array();

$company['website'] ='Buyscripts.in';

$company['script'] ='vShare Youtube Clone';

$company['price'] =10;

echo '<pre>';

print_r ($company);

echo '<pre>';

echo $company['website'] . ' provide ' . strtoupper($company['script'])  . ' script for $ ' . $company['price'];

[admin]

http://php.flashwebhost.com/sibichan/Day-6/day_6_array_1.php

<?php

$company = array();

$company['website'] ='Buyscripts.in';

$company['script'] ='vShare Youtube Clone';

$company['price'] =10;

echo '<pre>';

print_r ($company);

echo '<pre>';

echo $company['website'] . ' provide ' . strtoupper($company['script'])  . ' script for $ ' . $company['price'];

Good use of strtoupper to display script name in upper case.

[Austinwhite]

http://php.flashwebhost.com/austin/array2.php

<?php
$stnds = array();
$std1 = array();
$std1['name'] = 'CHRIS';
$std1['age'] = 9;
$std1['mark'] = 87;
$std1['place'] = 'ARTHUNKAL';

$std2=array();
$std2['name'] = 'Stefin';
$std2['age']= 13;
$std2['mark']= 91;
$std2['place']= 'ERNAKULAM';

$stnds[]=$std1;
$stnds[]=$std2;

echo '<pre>';
print_r($stnds);
echo'</pre>';

foreach($stnds as $std){
echo strtoupper($std['name']);

if($std['age']>10){
 echo '<br>'.'hello big boy <br>';}
 else{
 echo'<br>'.'hello small boy<br>';}

if($std['mark']>50)
echo 'You passed';
else
echo 'Am sorry you have to try again';

echo '<br>'.strtolower($std['place']);
echo '<br><br>';
}

[rameshxavier]

DAY 6 PHP PROGRAMMING - MY 1'st CODE

http://php.flashwebhost.com/ramesh/day-6/day-6_1.php

<?php

$teamindia = array();

$playername['name'] = 'Sourav Ganguly';
$playername['price'] = 90000000;
$playername['iconic player'] = 'yes';
$playername['formats of cricket'] = 'Twenty20';
$playername['team'] = 'Kolkata Knight Riders';
$playername['player type'] = 'Batsman';

echo '<pre>';
print_r($playername);
echo '</pre>';

echo ('<font color=green><h1>About the IPL player</h1></font>');
echo '<b>Name:</b> '  . $playername['name']  . '<br>';
echo '<b>Price Paid:</b> Rs: '  . $playername['price']  . '/-<br>';
echo '<b>Team:</b> '  . $playername['team']  . '<br>';
echo '<b>Player Type:</b> '  . $playername['player type']  . '<br>';
echo '<b>Iconic Player:</b> '  . $playername['iconic player']  . '<br>';
echo '<b>Formats of Cricket:</b> '  . $playername['formats of cricket']  . '<br>';

[vineesh]

http://php.flashwebhost.com/vineesh/..._6_array_1.php

<?php

$domainName = array();

$domainName[extension] = '.com';
$domainName[registry] = 'public domain registry';
$domainName[price] = '$10.50 per year';
$domainName[status] = 'congratulations!, its available!!!';
$registrar = '<a href="http://www.FlashWebHost.com">www.flashwebhost.com</a> <br><br>';

echo '<pre>';
print_r($domainName);
echo '</pre>';

echo '<h1><font color=red><i>Domain Name Info: </i></h1></font>';
echo '<b><font color=green>Extension: </b></font>' . strtoupper($domainName[extension]) . '<br>';
echo '<b><font color=blue>Registry: </b></font>'. ucwords($domainName[registry]) . '<br>';
echo '<b><font color=magenta>Current Status: </b></font> ' . ucwords($domainName[status]) . '<br>';
echo '<b><font color=orange>Price: </b></font>' . ucwords($domainName[price]) . '<br><br>';


echo '<font color=green>' . 'This means, ' . strtoupper($domainName[extension]) . ' extension domain is providing by ' . ucwords($domainName[registry]) . ' And the cost is ' . ucwords($domainName[price]) . 'You can register domain names through ' . strtoupper($registrar) . 
'</font>';