PHP | imagecopyresized() function

The imagecopyresized() function is an inbuilt function in PHP which is used to copy a rectangular portion of one image to another image. dst_image is the destination image, src_image is the source image identifier. This function is similar to imagecopyresampled() function but doesn’t do sampling to reduce size.

Syntax:

bool imagecopyresized( resource $dst_image, 
resource $src_image, int $dst_x, int $dst_y,
 int $src_x, int $src_y, int $dst_w, 
int $dst_h, int $src_w, int $src_h )

Parameters:This function accepts ten parameters as mentioned above and described below:

• $dst_image: It specifies the destination image resource.
• $src_image: It specifies the source image resource.
• $dst_x: It specifies the x-coordinate of destination point.
• $dst_y: It specifies the y-coordinate of destination point.
• $src_x: It specifies the x-coordinate of source point.
• $src_y: It specifies the y-coordinate of source point.
• $dst_w: It specifies the destination width.
• $dst_h: It specifies the destination height.
• $src_w: It specifies the source width.
• $src_h: It specifies the source height.

Return Value: This function returns TRUE on success or FALSE on failure.

Below given programs illustrate the imagecopyresized() function in PHP:
Program 1 (Resize image to 1.5 times of its width and height):

<?php
// The percentage to be used
$percent = 1.5;  // make image 1.5 times bigger

// Get image dimensions
list($width, $height) = getimagesize('https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');
$newwidth = $width * $percent;
$newheight = $height * $percent;

// Get the image
$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg('https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');

// Resize the image
imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

// Output the image
header('Content-Type: image/jpeg');
imagejpeg($thumb);
?>

Output:

Program 2 (Resize image with a fixed width and height):

<?php
// Set a  fixed height and width
$width = 150;
$height = 150;

// Get image dimensions
list($width_orig, $height_orig) = getimagesize('https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');

// Resample the image
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg('https://media.geeksforgeeks.org/wp-content/uploads/20200123100652/geeksforgeeks12.jpg');
imagecopyresized($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);

// Output the image
header('Content-Type: image/jpeg');
imagejpeg($image_p, null, 100);
?>

Output:

Reference: https://www.php.net/manual/en/function.imagecopyresized.php