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);
?>
![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>";
?>](https://image.slidesharecdn.com/lecturesnote-230126102946-ad1d93bb/85/Php-image-functions-pptx-13-320.jpg)
