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Multidimensional Arrays Using PHP
<html> <body> <?php $marks = array( "mohammad" => array ( "physics" => 35, "maths" => 30, "chemistry" => 39 ), "qadir" => array ( "physics" => 30, "maths" => 32, "chemistry" => 29 ), "zara" => array ( "physics" => 31, "maths" => 22, "chemistry" => 39 ) ); /* Accessing multi-dimensional array values */ echo "Marks for mohammad in physics : " ; echo $marks['mohammad']['physics'] . "<br />"; echo "Marks for qadir in maths : "; echo $marks['qadir']['maths'] . "<br />"; echo "Marks for zara in chemistry : " ; echo $marks['zara']['chemistry'] . "<br />"; ?> </body> </html>
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Sitemaps
A sitemap is the map of a website showing the location of pages. These sitemaps are formatted for Search Engine Optimization and to streamline the user experience. There are different types of sitemaps. They can be Standard sitemaps, Content-based such as videos, images etc., How to Create a Sitemap There are a lot of plugins available that automatically create a sitemap. People who use WordPress can create a sitemap with a few simple clicks. For simple websites, these plugins work fine. There are very good options for SEO for WordPress by Yoast, which has a built-in sitemap generator, or Google XML Sitemaps Generator by Arne Brachhold. You can use either of these. Once these plugins are installed and activated they will automatically generate a sitemap for your site.
Numeric Array In PHP
<html> <body> <?php /* First method to create array. */ $numbers = array( 1, 2, 3, 4, 5); foreach( $numbers as $value ) { echo "Value is $value <br />"; } /* Second method to create array. */ $numbers[0] = "one"; $numbers[1] = "two"; $numbers[2] = "three"; $numbers[3] = "four"; $numbers[4] = "five"; foreach( $numbers as $value ) { echo "Value is $value <br />"; } ?> </body> </html>
Associative Arrays in PHP
<html> <body> <?php /* First method to associate create array. */ $salaries = array("mohammad" => 2000, "qadir" => 1000, "zara" => 500); echo "Salary of mohammad is ". $salaries['mohammad'] . "<br />"; echo "Salary of qadir is ". $salaries['qadir']. "<br />"; echo "Salary of zara is ". $salaries['zara']. "<br />"; /* Second method to create array. */ $salaries['mohammad'] = "high"; $salaries['qadir'] = "medium"; $salaries['zara'] = "low"; echo "Salary of mohammad is ". $salaries['mohammad'] . "<br />"; echo "Salary of qadir is ". $salaries['qadir']. "<br />"; echo "Salary of zara is ". $salaries['zara']. "<br />"; ?> </body> </html>
GET Method PHP Code
<?php if( $_GET["name"] || $_GET["age"] ) { echo "Welcome ". $_GET['name']. "<br />"; echo "You are ". $_GET['age']. " years old."; exit(); } ?> <html> <body> <form action = "<?php $_PHP_SELF ?>" method = "GET"> Name: <input type = "text" name = "name" /> Age: <input type = "text" name = "age" /> <input type = "submit" /> </form> </body> </html>
The POST Method using PHP
<?php if( $_POST["name"] || $_POST["age"] ) { if (preg_match("/[^A-Za-z'-]/",$_POST['name'] )) { die ("invalid name and name should be alpha"); } echo "Welcome ". $_POST['name']. "<br />"; echo "You are ". $_POST['age']. " years old."; exit(); } ?> <html> <body> <form action = "<?php $_PHP_SELF ?>" method = "POST"> Name: <input type = "text" name = "name" /> Age: <input type = "text" name = "age" /> <input type = "submit" /> </form> </body> </html>