Create image from url: multiple problems

[Thew]

<?php
if(isset($_GET['img']) && is_numeric($_GET['img'])){ 
$img = $_GET['img']; 

$imgarray = array ( 
'1' => 'http://www.path/to/image1.png', 
'2' => 'http://www.path/to/image2.png', 
'3' => 'http://www.path/to/image3.png'
);

$src = $imgarray[$img];
header('Content-type: image/png');
echo file_get_contents($src);
}
else
{
    header('Content-type: image/png');
echo 'Image could not be loaded';
}
?>

Hello again bytes! Im having multiple problems. 1: When the $_GET['img'] is set and its numeric, the image will be displayed right, but i want to add text in the upper-right corner of the image... How can i do that? I've looked through multiple GD tutorials and examples but i can't find my answer. 2: When $_GET['img'] isn't set i want to display the text: Image could not be loaded. How cna i do that? Because this doesn't seem to work...

[Dormilich]

in both cases you need to apply imagecreatefrom string() or a combination of this with other GD functions. mind that you have to return an image, not text.

[johny10151981]

think simple:

you dont need to print the content of the image by yourslef.

you can do this:

<?php
if(isset($_GET['img']) && is_numeric($_GET['img'])){ 
$img = $_GET['img']; 
 
$imgarray = array ( 
'1' => 'http://www.path/to/image1.png', 
'2' => 'http://www.path/to/image2.png', 
'3' => 'http://www.path/to/image3.png'
);
 
$src = $imgarray[$img];
echo "<img src='".$src."' alt='".$src."'>";
}
else
{
 echo 'Image could not be loaded';
}
?>

if a specific file is missing and you want to print some text then you must not set the Content-type. just print the missing message.

[Dormilich]

although that code has to be put in the HTML page …

[Thew]

I searched on PHP.net and after some time i found this:

$text = base64_decode('Image could not be loaded!');
	
	$im = imagecreatefromstring($text);
	header('Content-Type: image/png');
	imagepng($im);
	imagedestroy($im);

But that doesn't seem to work at me? And the text in the upper-right corner? How can i do that?
EDIT: I searched through the GD Functions and imagestring() worked. But now i still want to place my text in the upper-right corner when $_GET['img'] is set...