How can one effectively debug PHP code to identify errors in image creation?

To effectively debug PHP code to identify errors in image creation, you can start by checking for syntax errors, ensuring the correct image libraries are installed, and verifying that the file paths are correct. You can also use error reporting functions like error_reporting(E_ALL) and ini_set('display_errors', 1) to display any potential errors. 

<?php
error_reporting(E_ALL);
ini_set('display_errors', 1);

$image = imagecreate(200, 200);
$black = imagecolorallocate($image, 0, 0, 0);
$white = imagecolorallocate($image, 255, 255, 255);

imageline($image, 0, 0, 200, 200, $white);

header('Content-type: image/png');
imagepng($image);
imagedestroy($image);
?>

Keywords

PHP debugging image creation error identification troubleshooting

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