Extensions of PHP functions in graphics processing

PHP provides powerful image processing functions, including resizing, adding text, applying filters and merging images.

Extension of PHP functions in graphics processing

PHP provides powerful image processing functions, allowing users to easily operate, Edit and create images.

Practical case: Resizing the image

<?php
// 加载图像
$image = imagecreatefromjpeg('image.jpg');

// 调整图像大小
$width = 200;
$height = 150;
$new_image = imagecreatetruecolor($width, $height);

// 复制和缩放图像
imagecopyresampled($new_image, $image, 0, 0, 0, 0, $width, $height, imagesx($image), imagesy($image));

// 输出图像
header('Content-Type: image/jpeg');
imagejpeg($new_image);
imagedestroy($image);
?>

This code shrinks the image to the specified size while maintaining its aspect ratio.

Other image processing functions

PHP also provides the following other functions for image processing:

• imagecreatefromstring(): From character String Create image
• imagefilter(): Apply image filter
• imagettftext(): Add text on image
• imagepng()：Output PNG image
• imagecopymerge()：Merge two images

Conclusion

Passed Using PHP's image processing functions, developers can easily manipulate and edit images to create interactive applications and websites.

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