Trying to add text into an image - php

I'm trying to add 2 line of text. One for the name of the person and the other for the name of the clan.
Could you help me of what I'm doing wrong? I don't get any error message or anything and the image is loading fine.
This is my code:
//Ribbons Image
$ribbons = array(
"ribbons/1STAID.png",
"ribbons/BMT.png",
"ribbons/BRA1A.png",
"ribbons/CCMD.png",
"ribbons/CCMDV2.png",
"ribbons/donator.png",
"ribbons/FTR.png",
"ribbons/GC.png",
"ribbons/GRA1A.png",
"ribbons/IOTP.png",
"ribbons/MEDIC.png",
"ribbons/PHA1A.png",
"ribbons/PILOT.png",
"ribbons/RCT1A.png",
"ribbons/RCT2A.png",
"ribbons/RCT3A.png",
"ribbons/RCT4A.png",
"ribbons/SRA1A.png",
"ribbons/SVR1A.png",
"ribbons/SVR2A.png",
"ribbons/SVR3A.png",
"ribbons/SVR4A.png",
"ribbons/SVR-ALTIS.png",
"ribbons/XOCMD.png",
"ribbons/XOCMDV2.png");
//Rank Image
$rank = imagecreatefrompng("rank/2LT.png");
//Background
$frame = imagecreatefrompng("sign3.png");
//imagecopymergy(output,image,x,y,0,0,w,h,100)
//Adding rank
imagecopymerge($frame, $rank, 30, 30, 0, 0, 10, 25, 100);
//Trying to add the text on the image
$im = imagecreatetruecolor(400, 30);
$white = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 29, $white);
$text = 'Test...';
$font = 'arial.ttf';
imagettftext($im, 20, 0, 10, 20, $white, $font, $text);
//Adding the ribbon on the image
$z = 0;
$i = 0;
for ($y = 0; $y <= 120; $y += 20) {
$z++;
for ($x = 0; $x <= 150; $x += 50) {
if ($i <= 24) {
$rib = imagecreatefromjpeg($ribbons[$i]);
imagecopymerge($frame, $rib, $x + 375, $y + 50, 0, 0, 50, 20, 100);
}
$i++;
}
}
//Save the image + Display
imagepng($frame, 'generate/test.png');
imagepng($frame);
header('Content-Type: image/png');
Thanks for helping me!

Working code:
//Ribbons Image
$ribbons = array(
"ribbons/1STAID.png",
"ribbons/BMT.png",
"ribbons/BRA1A.png",
"ribbons/CCMD.png",
"ribbons/CCMDV2.png",
"ribbons/donator.png",
"ribbons/FTR.png",
"ribbons/GC.png",
"ribbons/GRA1A.png",
"ribbons/IOTP.png",
"ribbons/MEDIC.png",
"ribbons/PHA1A.png",
"ribbons/PILOT.png",
"ribbons/RCT1A.png",
"ribbons/RCT2A.png",
"ribbons/RCT3A.png",
"ribbons/RCT4A.png",
"ribbons/SRA1A.png",
"ribbons/SVR1A.png",
"ribbons/SVR2A.png",
"ribbons/SVR3A.png",
"ribbons/SVR4A.png",
"ribbons/SVR-ALTIS.png",
"ribbons/XOCMD.png",
"ribbons/XOCMDV2.png");
//Rank Image
$rank = imagecreatefrompng("rank/2LT.png");
//Background
$frame = imagecreatefrompng("sign3.png");
//imagecopymergy(output,image,x,y,0,0,w,h,100)
//Adding rank
imagecopymerge($frame, $rank, 30, 30, 0, 0, 10, 25, 100);
//Trying to add the text on the image
$im = imagecreatetruecolor(50, 30);
$black = imagecolorallocate($im, 0, 0, 0);
$white = imagecolorallocate($im, 0, 82, 255);
imagefilledrectangle($im, 4, 4, 50, 25, $white);
$text = 'Nato Military Corp';
$font = 'arial.ttf';
imagettftext($frame, 12, 0, 450, 220, $white, $font, $text);
//imagecopymerge($frame, $im, 10, 20, 0, 0, 10, 25, 100);
//Adding the ribbon on the image
$z = 0;
$i = 0;
for ($y = 0; $y <= 120; $y += 20) {
$z++;
for ($x = 0; $x <= 150; $x += 50) {
if ($i <= 24) {
$rib = imagecreatefromjpeg($ribbons[$i]);
imagecopymerge($frame, $rib, $x + 375, $y + 50, 0, 0, 50, 20, 100);
}
$i++;
}
}
//Save the image + Display
imagepng($frame, 'generate/test.png');
imagepng($frame);
header('Content-Type: image/png');

Related

PHP GD - image damaged when using imagettftext()

I'am using PHP 7.4, with Symfony 5.2, memory_limit = 1024M in php.ini
I implement an API which put a quote in an image, using imagettftext() method.
My problem is that the image is damaged. It seems to be because of the length of the text.
When the text is short, the result is ok:
image ok
When the text is longer, the image is damaged (color spots appear):
image damaged
Here is my code:
private function createResource(string $imageContent, array $quote)
{
$image = \imagecreatefromstring($imageContent);
$heigh = \imagesy($image);
$width = \imagesx($image);
$text = $quote['quote'];
$charsArray = \str_split($text, 1);
$charsTotalNb = \count($charsArray);
$charsNbPerLine = (int) floor(($width - 50) / 10);
$lineNb = (int) ceil($charsTotalNb / $charsNbPerLine);
$text = \wordwrap($text, $charsNbPerLine, "|", \false);
$quoteHeigh = 60 + $lineNb * 25;
$card = \imagecreatetruecolor($width, $heigh + $quoteHeigh);
$black = \imagecolorallocate($card, 0, 0, 0);
$white = imagecolorallocate($card, 255, 255, 255);
\imagefill($card, 0, 0, $black);
\imagecopymerge($card, $image, 0, 0, 0, 0, $width, $heigh, $quoteHeigh);
\imagedestroy($image);
$font = __DIR__ . '/../../public/fonts/Averia_Serif_Libre.ttf';
\imagettftext($card, 15, 0, 25, $heigh + 30, $white, $font, $text);
$author = $quote['author'];
if (empty($author)) {
$author = 'Anonymous';
}
\imagettftext(
$card,
12,
0,
(int) $width/2,
$heigh + 40 + $lineNb * 25,
$white,
$font,
'-' . $author . '-'
);
for ($i = 0 ; $i < 7 ; $i++ ) {
\imageline($card, 0 + $i, 0 + $i, 0 + $i , \imagesy($card), $black);
\imageline($card, 0, 0 + $i, \imagesx($card) , 0 + $i, $black);
\imageline($card, \imagesx($card) - $i, 0, \imagesx($card) - $i, \imagesy($card), $black);
}
if (empty(\get_resource_type($card))) {
throw new Exception("Error Processing Request in CardService::createCard()");
}
return $card;
}
How fix my problem ? How to remedy the deterioration of the cat's image?
Thanks for your answers.
I found the problem in my code :
The following line is wrong because of the last argument :
\imagecopymerge($card, $image, 0, 0, 0, 0, $width, $heigh, $quoteHeigh);
The correction is :
\imagecopymerge($card, $image, 0, 0, 0, 0, $width, $heigh, 100);
```

imagecopyresampled after rotating the image

I am trying to copy image (to $img) after rotating image (many images $im) but I get weird behavior. Once I un-comment the line //$img = I only get the rotated image on my final output. Can I rotate the inner $im and copy it to final image$img?
<?php
$height = 80;
$width = 300;
$img = imagecreate($width, $height);
$c = imagecolorallocate ($img , 135, 135, 135);
imagefill($img, 0, 0, imagecolorallocate($img, 255, 255, 255));
for($i=0; $i<=5; $i++){
$im = imagecreatetruecolor(35, 35);
$gry = imagecolorallocate($im, 135, 135, 135);
$wht = imagecolorallocate($im, 255, 255, 255);
$j = mt_rand(0, 1);
$ch = mt_rand(0,1)?chr(rand(65, 90)):chr(rand(97, 122));
if($j == 0){
imagefill($im, 0, 0, $wht);
imagefttext($im, 20, 0, 3, 21, $gry, 'AHGBold.ttf', $ch);
//$img = imagerotate($im, mt_rand(0,10)-5, $wht);
}else{
imagefill($im, 0, 0, $gry);
imagefttext($im, 20, 0, 3, 21, $wht, 'AHGBold.ttf', $ch);
//$img = imagerotate($im, mt_rand(0,10)-5, $gry);
}
imagecopyresampled($img, $im, 5 + $i*42, $height/2 - 12, 0, 0, 40, 40, 25, 25);
}
header('Content-type: image/png');
imagepng($img);
change
$img = imagerotate($im, mt_rand(0,10)-5, $wht);
and
$img = imagerotate($im, mt_rand(0,10)-5, $gry);
to
$im = imagerotate($im, mt_rand(0,10)-5, $wht);
and
$im = imagerotate($im, mt_rand(0,10)-5, $gry);
in cases that imagerotes does not work you can use the following function to rotate an image:
function imagerotateEquivalent(&$srcImg, $angle, $bgcolor, $ignore_transparent = 0)
{
$srcw = imagesx($srcImg);
$srch = imagesy($srcImg);
if($angle == 0) return $srcImg;
// Convert the angle to radians
$theta = deg2rad ($angle);
// Calculate the width of the destination image.
$temp = array ( rotateX(0, 0, 0-$theta),
rotateX($srcw, 0, 0-$theta),
rotateX(0, $srch, 0-$theta),
rotateX($srcw, $srch, 0-$theta)
);
$minX = floor(min($temp));
$maxX = ceil(max($temp));
$width = $maxX - $minX;
// Calculate the height of the destination image.
$temp = array ( rotateY(0, 0, 0-$theta),
rotateY($srcw, 0, 0-$theta),
rotateY(0, $srch, 0-$theta),
rotateY($srcw, $srch, 0-$theta)
);
$minY = floor(min($temp));
$maxY = ceil(max($temp));
$height = $maxY - $minY;
$destimg = imagecreatetruecolor($width, $height);
imagefill($destimg, 0, 0, imagecolorallocate($destimg, 0,255, 0));
// sets all pixels in the new image
for($x=$minX;$x<$maxX;$x++) {
for($y=$minY;$y<$maxY;$y++)
{
// fetch corresponding pixel from the source image
$srcX = round(rotateX($x, $y, $theta));
$srcY = round(rotateY($x, $y, $theta));
if($srcX >= 0 && $srcX < $srcw && $srcY >= 0 && $srcY < $srch)
{
$color = imagecolorat($srcImg, $srcX, $srcY );
}
else
{
$color = $bgcolor;
}
imagesetpixel($destimg, $x-$minX, $y-$minY, $color);
}
}
return $destimg;
}
function rotateX($x, $y, $theta){
return $x * cos($theta) - $y * sin($theta);
}
function rotateY($x, $y, $theta){
return $x * sin($theta) + $y * cos($theta);
}
I got the above code from a note in php.net

Php captcha session variable not found

I have this captcha.php file that I load on the page I want the captcha to appear on using jQuery load.
In the captcha.php file I start a new session and I set a variable (theCaptchaCode) which contains the code you see on the image, but when I try to get the session variable with $theCaptchaCode = $_SESSION['theCaptchaCode']. It says
undefined index: theCaptchaCode.
Captcha.php code:
<?php
//Killing previous session
session_start();
session_unset();
session_destroy();
?>
<?php
session_start();
$theCaptchaCode = "";
$thisCaptchaImg = imagecreatetruecolor(200, 50);
$color = imagecolorallocate($thisCaptchaImg, 0, 0, 0);
$dotColor = imagecolorallocate($thisCaptchaImg, 46, 46, 46);
$backgroundColor = imagecolorallocate($thisCaptchaImg, 255, 255, 255);
imagefilledrectangle($thisCaptchaImg, 0, 0, 200, 70, $backgroundColor);
$characters = '123456789QWERTYUIOPASDFGHJKLZXCVBNM';
$length = strlen($characters);
for ($l = 0; $l < 4; $l++)
{
imageline($thisCaptchaImg, 0, rand() % 50, 200, rand() % 50, $color);
}
for ($d = 0; $d < 1500; $d++)
{
imagesetpixel($thisCaptchaImg, rand() % 200, rand() % 50, $dotColor);
}
for ($c = 0; $c < 7; $c++)
{
$selCharacter = $characters[rand(0, $length - 1)];
imagestring($thisCaptchaImg, 5, 5 + ($c * 30), 20, $selCharacter, $color);
$theCaptchaCode .= $selCharacter;
}
imagepng($thisCaptchaImg, 'thisCaptchaImage.png');
$_SESSION['theCaptchaCode'] = $theCaptchaCode;
session_destroy();
?>
At the end of your code remove the session_destroy() method.
Edited:
Use the below code:
<?php session_start();
$theCaptchaCode = "";
$thisCaptchaImg = imagecreatetruecolor(200, 50);
$color = imagecolorallocate($thisCaptchaImg, 0, 0, 0);
$dotColor = imagecolorallocate($thisCaptchaImg, 46, 46, 46);
$backgroundColor = imagecolorallocate($thisCaptchaImg, 255, 255, 255);
imagefilledrectangle($thisCaptchaImg, 0, 0, 200, 70, $backgroundColor);
$characters = '123456789QWERTYUIOPASDFGHJKLZXCVBNM';
$length = strlen($characters);
for($l=0;$l < 4;$l++)
{
imageline($thisCaptchaImg, 0, rand()%50, 200, rand()%50, $color);
}
for($d=0;$d < 1500;$d++)
{
imagesetpixel($thisCaptchaImg, rand()%200, rand()%50, $dotColor);
}
for($c=0;$c < 7;$c++)
{
$selCharacter = $characters[rand(0, $length-1)];
imagestring($thisCaptchaImg, 5, 5+($c*30), 20, $selCharacter, $color);
$theCaptchaCode .= $selCharacter;
}
imagepng($thisCaptchaImg, 'thisCaptchaImage.png');
$_SESSION['theCaptchaCode'] = $theCaptchaCode;
?>

FPDF Text Stroke

I'm trying to write some text with stroke in a PDF file using the FPDF PHP class.
I noticed a strange black text border and I don't know how to make it disappear.
I'll show you a simplified code of what i'm doing and the result so you can understand my problem:
require('fpdf/fpdf.php');
$pdf = new FPDF('P','pt',array(250,300));
$pdf->AddPage();
$letter = imagecreatetruecolor(250,300);
imagealphablending($letter, 1);
imagesavealpha($letter, 1);
imagefill($letter, 0, 0, imagecolorallocatealpha($letter, 0, 0, 0, 127));
$border = imagecreatetruecolor(250,300);
imagealphablending($border, 1);
imagesavealpha($border, 1);
imagefill($border, 0, 0, imagecolorallocatealpha($border, 0, 0, 0, 127));
$letter_color = imagecolorallocate($letter, 0, 0, 255);
$border_color = imagecolorallocate($letter, 255, 0, 0);
imagettftext($letter, 350, 0, 25, 250, $letter_color, 'font/times.ttf', 'a');
imagettftext($border, 350, 0, 25, 250, $border_color, 'font/times.ttf', 'a');
imagepng($letter,'letter.png');
imagepng($border,'border.png');
imagedestroy($letter);
imagedestroy($border);
for($j = 0; $j < 10; $j++) {
for($k = 0; $k < 10; $k++) {
$pdf->Image('border.png', $k - 5, $j - 5, 250, 300);
}
}
$pdf->Image('letter.png', 0, 0, 250, 300);
unlink('letter.png');
unlink('border.png');
$pdf->Output();
This is the result: http://postimg.org/image/l97rr0xzr/
How can I solve this?
A little bit late:
I used a function http://www.fpdf.org/en/script/script78.php# in a custom class:
class CustomPdf extends Fpdf
{
public function ClippingText($x, $y, $txt, $outline=false)
{
$op= $outline ? 5 : 7;
$this->_out(sprintf('q BT %.2F %.2F Td %d Tr (%s) Tj ET',
$x*$this->k,
($this->h-$y)*$this->k,
$op,
$this->_escape($txt)));
}
public function strokeText($x, $y, $txt, $outline=true)
{
$this->SetTextColor(46, 52, 120);
$this->Text($x,$y,$txt);
$this->SetDrawColor(186, 236, 253);
$this->SetLineWidth(0.5);
$this->ClippingText($x,$y,$txt,$outline);
}
}
$pdf = new CustomPdf();
.... add pages and fonts and cells
$pdf->strokeText(30,30,'Hola mundo');
results in
The problem is in the imagettftext(), but if I use that function to print letters of the same color in a single image the shadow appears only on the border of the "composition letters". Now I temporary moved the for loop to do what I just explained.
This is the simplified code:
require('fpdf/fpdf.php');
$pdf = new FPDF('P','pt',array(250,300));
$pdf->AddPage();
$letter = imagecreatetruecolor(250,300);
imagealphablending($letter, 1);
imagesavealpha($letter, 1);
imagefill($letter, 0, 0, imagecolorallocatealpha($letter, 0, 0, 0, 127));
$letter_color = imagecolorallocate($letter, 0, 0, 255);
$border_color = imagecolorallocate($letter, 255, 0, 0);
for($j = -5; $j <= 5; $j++) {
for($k = -5; $k <= 5; $k++) {
imagettftext($letter, 350, 0, 25 + $j, 250 + $k, $border_color, 'font/times.ttf', 'a');
}
}
imagettftext($letter, 350, 0, 25, 250, $letter_color, 'font/times.ttf', 'a');
imagepng($letter,'letter.png');
imagedestroy($letter);
$pdf->Image('letter.png', 0, 0, 250, 300);
unlink('letter.png');
$pdf->Output();
This is the result: http://postimg.org/image/s44v2rbqn/
Still looking for how to delete the shadow.
Now that i really understood the problem, I noticed that this is a duplicate. Sorry.
If you know the answer go here: How we can change the font opacity and shadowing in imagettftext function?

How to create transparent background with PHP using GD?

I made an image combining 3 different images, but I need a transparent background, and I don't succeed doing it. This is my final code:
<?php
$meko = $_GET['image'];
$im = $meko;
$bookback = "images/book_back.png";
$mekoCanvas = imagecreatetruecolor(115, 135);
$canvas = imagecreatetruecolor(115, 185);
$bookback = imagecreatefrompng($bookback);
$meko = imagecreatefromjpeg($meko);
imagecopy($mekoCanvas, $meko, 0, 0, 0, 0, 100, 135);
imagecopy($mekoCanvas, $bookback, 100, 0, 0, 0, 15, 135);
$im = $mekoCanvas;
$rH = 50; // Reflection height
$tr = 30; // Starting transparency
$div = 1; // Size of the divider line
$w = 115;
$h = 135;
//$im = imagecreatefromjpeg($im);
$li = imagecreatetruecolor($w, 1);
$bgc = imagecolorallocate($li, 255, 255, 255); // Background color
imagefilledrectangle($li, 0, 0, $w, 1, $bgc);
$bg = imagecreatetruecolor($w, $rH);
$wh = imagecolorallocate($im,255,255,255);
$im = imagerotate($im, -180, $wh);
imagecopyresampled($bg, $im, 0, 0, 0, 0, $w, $h, $w, $h);
$im = $bg;
$bg = imagecreatetruecolor($w, $rH);
for ($x = 0; $x < $w; $x++) {
imagecopy($bg, $im, $x, 0, $w-$x, 0, 1, $rH);
}
$im = $bg;
$in = 100/$rH;
for($i=0; $i<=$rH; $i++){
if($tr>100) $tr = 100;
imagecopymerge($im, $li, 0, $i, 0, 0, $w, 1, $tr);
$tr+=$in;
}
imagecopymerge($im, $li, 0, 0, 0, 0, $w, $div, 100); // Divider
header('content-type: image/jpeg');
imagecopy($canvas, $mekoCanvas, 0, 0, 0, 0, 115, 135);
imagecopy($canvas, $im, 0, 135, 0, 0, 115, 50);
imagejpeg($canvas);
imagedestroy($im);
imagedestroy($li);
?>
and the results is:
click here
You're not telling GD to use alpha in any of your code. That's done with imagesavealpha, imagealphablending, etc...
Try using
imagecolortransparent($im);
http://www.php.net/manual/en/function.imagecolortransparent.php

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