How to use php var_dump function

var_dump() function is used to output variable-related information. The syntax is var_dump ($expsn), which displays structured information about one or more expressions, including the type and value of the expression. Arrays will expand values ​​recursively, showing their structure through indentation.

php How to use the var_dump() function?

var_dump() function is used to output relevant information about variables.

var_dump() function displays structural information about one or more expressions, including the type and value of the expression. Arrays will expand values ​​recursively, showing their structure through indentation.

Syntax

var_dump ($expsn)

Parameters: This function takes a single parameter

$expsn: Specify the variable you want to output. It can be a single variable or an expression containing multiple space-separated variables of any type.

Return value: No return value.

PHP version requirements: PHP 4, PHP 5, PHP 7

The following is an example of how to use the php var_dump() function.

Example 1:

<?php
$a = array(1, 2, array("a", "b", "c"));
var_dump($a);
?>

Output:

array (size=3)
  0 => int 1
  1 => int 2
  2 => 
    array (size=3)
      0 => string 'a' (length=1)
      1 => string 'b' (length=1)
      2 => string 'c' (length=1)

Example 2:

<?php
$b = 3.1;
$c = true;
var_dump($b, $c);
?>

Output:

float(3.1)
bool(true)

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