Php image creation

1. IMAGE FUNCTION
• <?php
create_image();
print "<img src=image.png?".date("U").">";
function create_image(){
$im = @imagecreate(200, 200) or die("Cannot
Initialize new GD image stream");
$background_color = imagecolorallocate($im, 255,
255, 0); // yellow
imagepng($im,"image.png");
imagedestroy($im);
}
?>

2. line
• <?php
create_image();
print "<img src=image.png?".date("U").">";
function create_image(){
$im = @imagecreate(200, 200) or die("Cannot Initialize new GD image
stream");
$background_color = imagecolorallocate($im, 255, 255, 0); // yellow
$red = imagecolorallocate($im, 255, 0, 0); // red
$blue = imagecolorallocate($im, 0, 0, 255); // blue
imageline ($im, 5, 5, 195, 5, $red);
imageline ($im, 5, 5, 195, 195, $blue);
imagepng($im,"image.png");
imagedestroy($im);
}
?>

4. Rectangle
• <?php
create_image();
print "<img src=image.png?".date("U").">";
function create_image(){
$im = @imagecreate(200, 200) or die("Cannot Initialize new GD image
stream");
$background_color = imagecolorallocate($im, 255, 255, 0); // yellow
$red = imagecolorallocate($im, 255, 0, 0); // red
$blue = imagecolorallocate($im, 0, 0, 255); // blue
imagerectangle ($im, 5, 10, 195, 50, $red);
imagefilledrectangle ($im, 5, 100, 195, 140, $blue);
imagepng($im,"image.png");
imagedestroy($im);
}
?>

6. Circle
• <?php
create_image();
print "<img src=image.png?".date("U").">";
function create_image(){
$im = @imagecreate(200, 200) or die("Cannot Initialize new GD image
stream");
$background_color = imagecolorallocate($im, 255, 255, 0); // yellow
$red = imagecolorallocate($im, 255, 0, 0); // red
$blue = imagecolorallocate($im, 0, 0, 255); // blue
imageellipse($im, 50, 50, 40, 60, $red);
imagefilledellipse($im, 150, 150, 60, 40, $blue);
imagepng($im,"image.png");
imagedestroy($im);
}
?>

8. Arc
• <?php
create_image();
print "<img src=image.png?".date("U").">";
function create_image(){
$im = @imagecreate(200, 200) or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 255, 255, 0); // yellow
$red = imagecolorallocate($im, 255, 0, 0); // red
$blue = imagecolorallocate($im, 0, 0, 255); // blue
imagearc($im, 20, 50, 40, 60, 0, 90, $red);
imagearc($im, 70, 50, 40, 60, 0, 180, $red);
imagearc($im, 120, 50, 40, 60, 0, 270, $red);
imagearc($im, 170, 50, 40, 60, 0, 360, $red);
imagefilledarc($im, 20, 150, 40, 60, 0, 90, $blue, IMG_ARC_PIE);
imagefilledarc($im, 70, 150, 40, 60, 0, 180, $blue, IMG_ARC_PIE);
imagefilledarc($im, 120, 150, 40, 60, 0, 270, $blue, IMG_ARC_PIE);
imagefilledarc($im, 170, 150, 40, 60, 0, 360, $blue, IMG_ARC_PIE);
imagepng($im,"image.png");
imagedestroy($im);
}
?>

10. Text
• <?php
create_image();
print "<img src=image.png?".date("U").">";
function create_image(){
$im = @imagecreate(200, 200)or die("Cannot Initialize new GD image stream");
$background_color = imagecolorallocate($im, 255, 255, 0); // yellow
$red = imagecolorallocate($im, 255, 0, 0); // red
imagestring($im, 1,file:///C:/apache2triad/htdocs/0image/tutorial1.html 5, 10, "Hello !",
$red);
imagestring($im, 2, 5, 50, "Hello !", $red);
imagestring($im, 3, 5, 90, "Hello !", $red);
imagestring($im, 4, 5, 130, "Hello !", $red);
imagestring($im, 5, 5, 170, "Hello !", $red);
imagestringup($im, 5, 140, 150, "Hello !", $red);
imagepng($im,"image.png");
imagedestroy($im);
}
?>

11. Image Rotate Example
• <?php
$im = imagecreatefrompng("image.png");
$yellow = imagecolorallocate($im, 255, 255, 0);
$rotate = imagerotate($im, 90,$yellow);
imagepng($rotate,"image_rotated.png");
imagedestroy($im);
print "<img src=image.png> - <img
src=image_rotated.png>";
?>

12. Image Create From
• imagecreatefromgif -- Create a new image from file or
URL
• imagecreatefromjpeg -- Create a new image from file
or URL
• imagecreatefrompeg -- Create a new image from file
or URL
• imagecreatefromwbmp -- Create a new image from
file or URL
• imagecreatefromxbm -- Create a new image from file
or URL
• imagecreatefromxpm -- Create a new image from file
or URL

13. Resize Image
• <?php
$original_image = imagecreatefrompng("image.png");
// obtain data from selected image
$image_info = getimagesize("image.png");
// data contained in array $image_info may be displayed in next line
// print_r($image_info)
$width = $image_info[0]; // width of the image
$height = $image_info[1]; // height of the image
// we will reduce image size to 70%, so new dimensions must be calculate
$new_width = round ($width*0.7);
$new_height = round ($height*0.7);
$new_image = imagecreate($new_width, $new_height);
imagecopyresized($new_image, $original_image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagepng($new_image,"resized_image.png");
imagedestroy($new_image);
print "<img src=image.png> <br>Resized image<BR> <img src=resized_image.png>";
?>

15. Get A Portion of Image
• <?php
// get the original image
$original_image = imagecreatefrompng("image.png");
// create new image
$new_image = imagecreate(200, 200);
// define red color (it will be the background of the new image)
$red = imagecolorallocate($new_image, 255, 0, 0);
imagecopyresized($new_image, $original_image, 75, 75, 0, 0, 100, 100, 100, 100);
imagepng($new_image,"new_image.png");
imagedestroy($new_image);
print "<img src=image.png> <br>New image<BR> <img src=new_image.png>";
?>

16. Modified an Image
• <?php
// get the original image
$im = imagecreatefrompng("image.png");
// new color
$blue = imagecolorallocate($im, 0, 0, 255); // blue
$red = imagecolorallocate($im, 255, 0, 0); // red
imagefilledrectangle ($im, 80, 5, 195, 60, $blue);
imagestring($im, 5, 80, 5, "Modified!", $red);
imagepng($im,"modified_image.png");
imagedestroy($im);
print "<img src=image.png> <br>Modified image<BR> <img
src=modified_image.png>";
?>

17. Image Created but not Saved
• <?php
header("Content-type: image/png");
$im = @imagecreate(200, 200) or die("Cannot Initialize new GD image
stream");
$background_color = imagecolorallocate($im, 255, 255, 0); // yellow
$blue = imagecolorallocate($im, 0, 0, 255); // blue
imagestring($im, 3, 5, 5, "My Text String", $blue);
imagepng($im);
imagedestroy($im);
?>