I'm really having a problem finding out how to fix this. I cannot seem to change the background from black. How is it possible?
$string = "foo";
$font = 4;
$width = ImageFontWidth($font) * strlen($string);
$height = ImageFontHeight($font);
$im = #imagecreatetruecolor ($width,$height);
$bg = imagecolorallocate($im, 255, 255, 255);
$textcolor = imagecolorallocate($im, 0, 0, 0);
imagestring($im, 5, 0, 0, $string, $textcolor);
imagegif($im, 'somefile.gif', 8);
imagedestroy($im);
Use:
imagefill($im, 0, 0, $bg);
Incorporating user279470's answer:
$string = "foo";
$font = 4;
$width = ImageFontWidth($font) * strlen($string);
$height = ImageFontHeight($font);
$im = #imagecreatetruecolor ($width,$height);
$bg = imagecolorallocate($im, 255, 255, 255);
imagefill($im, 0, 0, $bg);
$textcolor = imagecolorallocate($im, 0, 0, 0);
imagestring($im, 5, 0, 0, $string, $textcolor);
imagepng($im, 'somefile.png', 8);
imagedestroy($im);
Related
this is my code:
header('Content-Type: image/jpeg');
$image_width = 400;
$image_height = 30;
$im = imagecreatetruecolor($image_width, $image_height);
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 29, $white);
$text = utf8_encode("test 123 abc");
$font = 'myfont.ttf';
imagettftext($im, 20, 0, 10, 20, $black, $font, $text);
imagejpeg($im);
imagedestroy($im);
can anyone help me find where i am wrong.
I have this code
<?php
// Set the content-type
header('Content-type: image/png');
// Create the image
$im = imagecreatetruecolor(400, 30);
// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 29, $white);
// The text to draw
$text = 'Testing... a very long text';
// Replace path by your own font path
$font = 'arial.ttf';
// Add some shadow to the text
imagettftext($im, 20, 0, 11, 21, $grey, $font, $text);
// Add the text
imagettftext($im, 20, 0, 10, 20, $black, $font, $text);
// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);
?>
the problem here is, when I have a very long text, the other won't show.
I've searched that it can be done by
imagettfbbox()
but I don't know how to apply it here.
Any help?
try this code:
<?php
// Set the content-type
header('Content-type: image/png');
$img_width = 400;
$img_height = 30;
// Create the image
$im = imagecreatetruecolor($img_width, $img_height);
// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, $img_width, $img_height, $white);
// The text to draw
$text = 'Testing... a very long text bla.. ';
// Replace path by your own font path
$font = 'arial.ttf';
$fontSize = $img_width / strlen($text) * 1.8;
// Add some shadow to the text
imagettftext($im, $fontSize, 0, 11, 21, $grey, $font, $text);
// Add the text
imagettftext($im, $fontSize, 0, 10, 20, $black, $font, $text);
// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);
?>
New update code :
<?php
// Set the content-type
header('Content-type: image/png');
$img_width = 400;
$img_height = 30;
$font = 'arial.ttf';
// Create the image
$text = 'Testing... a very long text.. Testing... a very long text.. Testing... a very long text.. Testing... a very long text..';
$curTextLen = strlen($text);
$limit = 35;
$totalLine = ceil($curTextLen / $limit);
$img_height = $img_height * $totalLine;
$im = imagecreatetruecolor($img_width, $img_height);
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, $img_width, $img_height, $white);
for($i = 1; $i <= $totalLine; $i++){
$y = $i * 27;
$textN = substr($text,($limit * ($i-1)),$limit);
imagettftext($im, 20, 0, 11, $y, $grey, $font, $textN);
// Add the text
imagettftext($im, 20, 0, 10, $y, $black, $font, $textN);
}
// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);
?>
How to make Like This Image?
I just want to learn how do i get output like this using GD library,
Thanks for your help guys..
Here is your code, you could easily find it on google tho.
<?php
header ("Content-type: image/png");
$string = "your text"; // Change this text
$font = 4; // try changing this as well
$width = imagefontwidth($font) * strlen($string) ;
$height = imagefontheight($font) ;
$im = imagecreatefrompng("/path/to/yourimagefile");
$x = imagesx($im) - $width ;
$y = imagesy($im) - $height;
$backgroundColor = imagecolorallocate ($im, 255, 255, 255);
$textColor = imagecolorallocate ($im, 0, 0,0);
imagestring ($im, $font, $x, $y, $string, $textColor);
imagepng($im);
?>
Here's an example:
header('Content-Type: image/png'); // setting the content-type
$file = "yourimage.png";
$image = imagecreatefrompng($file); // creating the image
$font = "YourFont.ttf";
$size = 15; //pixels
$color = imagecolorallocate($image, 255, 255, 255); //white color
$text = "Your text here"
imagettftext($image, 15, 0, 20, 40, $color, $font, $code); // adding the text
imagepng($image); // outputting the image
For more see imagettftext().
EDIT: An example of using multiple imagettftext():
header('Content-Type: image/png'); // setting the content-type
$file = "yourimage.png";
$image = imagecreatefrompng($file); // creating the image
$font = "YourFont.ttf";
$size = 15; //pixels
$color = imagecolorallocate($image, 255, 255, 255); //white color
$text = "Your text here"
imagettftext($image, 15, 0, 20, 40, $color, $font, $code); // adding the text
$text = "Text 2";
imagettftext($image, 15, 0, 25, 45, $color, $font, $code); // adding the text
$text = "Text 3";
imagettftext($image, 15, 0, 30, 50, $color, $font, $code); // adding the text
imagepng($image); // outputting the image
All the examples I've found on the web seem to create pngs with text from an existing png. Is it possible to create a transparent png from scratch and then add text?
The code ive got so far follows (but it doesnt work. just outputs a blank image source)
<?php
$width = 150;
$height = 30;
$text = "My Text";
$fontsize = 5;
$im = imagecreate($width, $height);
$transcolor = imagecolortransparent($im);
imagestring($im, $fontsize, 0, 0, $text, $transcolor);
header('Content-type: image/png');
imagepng($im);
imagedestroy($im);
?>
<?php
$font = 25;
$string = 'My Text';
$im = #imagecreatetruecolor(strlen($string) * $font / 1.5, $font);
imagesavealpha($im, true);
imagealphablending($im, false);
$white = imagecolorallocatealpha($im, 255, 255, 255, 127);
imagefill($im, 0, 0, $white);
$lime = imagecolorallocate($im, 204, 255, 51);
imagettftext($im, $font, 0, 0, $font - 3, $lime, "droid_mono.ttf", $string);
header("Content-type: image/png");
imagepng($im);
imagedestroy($im);
?>
Use imagestring instead of imagettftext if you don't want custom font.
Here's the solution based on your original code.
<?php
$width = 640;
$height = 480;
$text = "My Text";
$fontsize = 5;
$img = imagecreate($width, $height);
// Transparent background
$black = imagecolorallocate($img, 0, 0, 0);
imagecolortransparent($img, $black);
// Red text
$red = imagecolorallocate($img, 255, 0, 0);
imagestring($img, $fontsize, 0, 0, $text, $red);
header('Content-type: image/png');
imagepng($img);
imagedestroy($img);
?>
I Think GD is one of the most popular for generating images, with imagettftext.
<?php
$text = 'SOME TEXT';
$font="c:/windows/Fonts/Latinwd.ttf"; //Load font file for windows
$im = ImageCreate(700, 140);
$bla = imagecolorallocate($im, 0, 0, 0);
imagecolortransparent($im, $bla); //transparent background
$black = imagecolorallocate($im, 255,255,255);
ImageTTFText ($im, 38, 0, 10, 40, $black, $font, $text);
header('Content-Type: image/png');
ImagePNG($im, 'name.png');
imagedestroy($im);
?>
Is there any reason why imagecolorallocatealpha() would only be making the text grey?
<?php
header('Content-Type: image/png');
function checkImg($imgname) {
$im = #imagecreatefrompng($imgname);
if(!$im) {
$im = imagecreatetruecolor(150, 30);
$bgc = imagecolorallocate($im, 255, 255, 255);
$tc = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
imagestring($im, 1, 5, 5, 'Error loading ' . $imgname, $tc);
}
return $im;
}
$hr = 48;
$tOne = "VALID FOR";
$tTwo = $hr." HOURS";
$img = checkImg('img.png');
$font = 'helr67w.ttf';
$size = 9;
$red = imagecolorallocatealpha($img, 255, 0, 0, 75);
imagettftext($img, $size, 0, 225, 132, $red, $font, $tOne);
imagettftext($img, $size, 0, 225, 144, $red, $font, $tTwo);
imagepng($img);
imagedestroy($img);
?>
In your code you don't set the image to support an alpha channel. I can imagine that is causing the issue:
function checkImg($imgname) {
$im = #imagecreatefrompng($imgname);
if(!$im) {
$im = imagecreatetruecolor(150, 30);
$bgc = imagecolorallocate($im, 255, 255, 255);
$tc = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
imagestring($im, 1, 5, 5, 'Error loading ' . $imgname, $tc);
}
// Turn off alpha blending and set alpha flag
imagealphablending($im, true);
imagesavealpha($im, true);
return $im;
}
See imagesavealpha PHP Manual and imagealphablending PHP Manual