Today, We want to share with you how to call function in php?.In this post we will show you what is function in php?, hear for php function use we will give you demo and example for implement.In this post, we will learn about calling javascript function from php code with an example.
How to Define and Call a Function in PHP?
Example 1: call function using php code
<?php function onlineFreeGetAppoiments(){ echo "Today is " . date('l', mktime()); } onlineFreeGetAppoiments(); ?>
Functions with Parameters
Example 2: Defining function &
<?php function fetchTotal($ankno, $ankno2){ $sum = $ankno + $ankno2; echo "the total Sum of the two numbers $ankno and $ankno2 is : $sum"; } fetchTotal(10, 20); ?>
Functions with Optional Parameters and Default Values
<?php function genratedName($font, $size=1.5){ echo "<p style=\"font-family: $font; font-size: {$size}em;\">Welcome To Pakainfo.com!</p>"; } genratedName("Arial", 2); genratedName("Times", 3); genratedName("Courier"); ?>
Returning Values from a Function
<?php function fetchTotal($ankno, $ankno2){ $total = $ankno + $ankno2; return $total; } echo fetchTotal(5, 10); // Results: 15 ?>
<?php // Defining function function divideNumbers($dividend, $divisor){ $quotient = $dividend / $divisor; $array = array($dividend, $divisor, $quotient); return $array; } list($dividend, $divisor, $quotient) = divideNumbers(10, 2); echo $dividend; // Results: 10 echo $divisor; // Results: 2 echo $quotient; // Results: 5 ?>
Passing Arguments to a Function by Reference
<?php function selfMultiply(&$anknober){ $anknober *= $anknober; return $anknober; } $myankno = 5; echo $myankno; // Results: 5 selfMultiply($myankno); echo $myankno; // Results: 25 ?>
Understanding the Variable Scope
<?php function example(){ $welcomemsg = "Welcome Pakainfo!"; echo $welcomemsg; } example(); // Results: Welcome Pakainfo! echo $welcomemsg; // Generate undefined variable error ?>
<?php $welcomemsg = "Welcome Pakainfo!"; // Defining function function example(){ echo $welcomemsg; } example(); // Generate undefined variable error echo $welcomemsg; // Results: Welcome Pakainfo! ?>
The global Keyword
<?php $welcomemsg = "Welcome Pakainfo!"; function example(){ global $welcomemsg; echo $welcomemsg; } example(); // Outpus: Welcome Pakainfo! echo $welcomemsg; // Outpus: Welcome Pakainfo! // Assign a new value to variable $welcomemsg = "Thanks a lot"; example(); // Results: Thanks a lot echo $welcomemsg; // Results: Thanks a lot ?>
Creating Recursive Functions
<?php function printValues($arr) { global $count; global $products; if(!is_array($arr)){ die("ERROR: Input is not an array"); } foreach($arr as $a){ if(is_array($a)){ printValues($a); } else{ $products[] = $a; $count++; } } return array('total' => $count, 'values' => $products); } $species = array( "mobiles" => array( "lenova", "oppo", "vivo" ), "products" => array( "Eles", "tamil" => array( "bolly4u", "new", "link" ), "2021 nmew", "z570 v" ), "languages" => array( "programme" => array( "server" => array( "PHP", "Laravel" ), "Nodejs", "Angularjs" ), "English", "Hindi" => array( "tamilrokers", "Jiorokers" ) ) ); $result = printValues($species); echo $result['total'] . ' value(s) found: '; echo implode(', ', $result['values']); ?>
I hope you get an idea about php functions list.
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I am Jaydeep Gondaliya , a software engineer, the founder and the person running Pakainfo. I’m a full-stack developer, entrepreneur and owner of Pakainfo.com. I live in India and I love to write tutorials and tips that can help to other artisan, a Passionate Blogger, who love to share the informative content on PHP, JavaScript, jQuery, Laravel, CodeIgniter, VueJS, AngularJS and Bootstrap from the early stage.