Var_dump in PHP for Solving Functions in the Language

Syntax:

void var_dump ($expsn)

$expsn is a single-argument function that accepts a single variable or an expression containing several space separated variables of any type.

Return Type: There is no return type for this function.

Example 1

<?php

// PHP code to illustrate the working

//  of var_dump() Function 

var_dump(var_dump(2, 2.1, TRUE, array(1, 2, 3, 4)));

?>

Output

Example 2

<?php  

$a = array(1, 2, array("a", "b", "c"));  

var_dump($a);  

?>  

<?php  

$var1=678;  

$var2="a678";  

$var3="678";  

$var4="Simplilearn.com";  

$var5=698.99;  

$var6=+125689.66;  

echo var_dump($var1)."<br>";  

echo var_dump($var2)."<br>";  

echo var_dump($var3)."<br>";  

echo var_dump($var4)."<br>";  

echo var_dump($var5)."<br>";  

echo var_dump($var6)."<br>";  

?> 

Output

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The Dump Helper Function

When you var_dump in PHP the information about the variable, it's a little laborious to always echo the opening pre> and ending /pre> tags.

You may make things easier by creating a function that you can reuse. For instance, consider a function to be a reusable piece of code that may be referred to by a name. It's possible for a function to have both input and output.

Many built-in PHP functions, such as var_dump in PHP, are available. You can also create your own functions with it. User-defined functions are what they're called. In the function lesson, you'll learn more about it.

The following defines a variable-accepting function called var_dump in PHP. It dumps the variable's information and wraps the output with the pre> tag.

Example:

<?php

$message = 'Dump and die example';

echo '<pre>';

var_dump($message);

echo '</pre>';

die();

echo 'After calling the die function';

Output

Use of var_dump() Function

• First, use the var dump() function to dump information about the $message variable.
• Second, invoke the die() function to quickly end the script.

Conclusion 

Let us look at what we learned about var_dump in brief.

• To dump information about a variable, use the var dump() function.
• To make the output of the var_dump() method more legible, wrap it with a pre tag.
• The die() function immediately exits the script.
• To dump and die, use the var dump() and death() functions together.

This was all about the small and easy var_dump in PHP that will help you do multiple tasks on PHP. If you want to learn the concept to the core, then enroll in Simplilearn’s Full Stack Web Development course and advance your career.