image creation with added text from url(get) problem

[jonaHill87]

Hi all. I don't know much this function so I'll try to be as clear as I can. I'm trying to create an image from a png file with text from an url(using get) over top of the image. I found this example on the php.net but I just can't to get it to work, I just keep getting a blank screen. http://www.php.net/manual/en/ref.image.php. You need to scroll down a bit, it's example 1.

 

I'm sending my text data from one page that looks like this:

As you can see I'm getting my text from a database but that's not the problem.

<?php
$query = "SELECT ButtonText FROM ButtonMenu";
$result = mysql_query($query);
while ($query_data = mysql_fetch_row($result)) {
foreach ($query_data as $entry) {
echo "<img src='page2.php?text=$entry' />";
}
}
?>

 

to another page that looks like this. It contains the example code and I have added comments to the code lines that I'm not familiar with. Thanks to any1 that can help. Btw, my button.png is in the same dir as my php files.

<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("Button.png");
$black = imagecolorallocate($im, 0, 0, 0); //I don't need any color so can I remove this line?
$px = (imagesx($im) - 7.5 * strlen($string)) / 2; // not sure what's going on in this line.
imagestring($im, 3, $px, 9, $string, $black); //would i need to remove anything here?
imagepng($im);
imagedestroy($im);
?>

 

 

 

[priti]

Hi,

 

<?php

header("Content-type: image/png");

$string = $_GET['text'];

$im = imagecreatefrompng("Button.png");button.png

 

$black = imagecolorallocate($im, 0, 0, 0); //I don't need any color so can I remove this line?

 

YES YOU CAN REMOVE THIS LINE.

 

$px = (imagesx($im) - 7.5 * strlen($string)) / 2; // not sure what's going on in this line.

 

THIS CALCULATE WHERE TO SHOW YOUR STRING ON IMAGE ( X )

 

 

imagestring($im, 3, $px, 9, $string, $black); //would i need to remove anything here?

 

NO YOU DON'T HAVE TO CHANGE ANYTHING HERE IS $BLACK IS NULL OR EMPTY IT WILL TAKE IT AS WHITE COLOR.ALL FIELDS ARE MANDATORY NO OPTIONAL SO YOU HAVE TO GIVE THESE NUMBER OF PARAMETER IN imagestring() function.

 

imagepng($im);

imagedestroy($im);

?>

 

let us know if things are not solved.