How to solve php png garbled problem

Solution to php png garbled code: first find and open the PHP code file that caused the error; then delete all the html code, that is, the "html, head, body" code.

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Solution to garbled display of png images in php GD

Problem:

Code:

<?php
$im = imagecreate(100, 30);
$bg = imagecolorallocate($im, 255, 255, 255);
$textcolor = imagecolorallocate($im, 0, 0, 255);
imagestring($im, 5, 0, 0, "Hello world!", $textcolor);
header("Content-type: image/png");
imagepng($im);
?>

Run result:

Fatal error: Call to undefined function imagecreate() in D:/wamp/www/index.php on line 2

Solution:

Put the html code (html , head, body), delete all these codes, and that’s it.

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