Question

How to output an array for debugging in PHP

Answer 1

$arr = ["PHP", "Programming"];

echo "<pre>";
print_r($arr);
echo "</pre>";

/*
run: 
 
Array
(
    [0] => PHP
    [1] => Programming
)
 
*/

 

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Answer 2

$arr = ["PHP", "Programming"];

echo '<pre>' . print_r($arr, true) . '</pre>';

/*
run: 
 
Array
(
    [0] => PHP
    [1] => Programming
)
 
*/

 

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Answer 3

$arr = ["PHP", "Programming"];

header('Content-Type: text/plain; charset=utf-8');
print_r($arr);

/*
run: 
 
Array
(
    [0] => PHP
    [1] => Programming
)
 
*/

 

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Answer 4

$arr = ["PHP", "Programming"];

var_dump($arr); 

/*
run: 
 
array(2) { [0]=> string(3) "PHP" [1]=> string(11) "Programming" }
 
*/

 

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Answer 5

$arr = ["PHP", "Programming"];

var_export($arr); 

/*
run: 
 
array ( 0 => 'PHP', 1 => 'Programming', )
 
*/

 

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Answer 6

$arr = ["PHP", "Programming"];

echo var_export($arr, true); 

/*
run: 
 
array ( 0 => 'PHP', 1 => 'Programming', )
 
*/

 

70+ SQL courses for beginners and professionals