访问具有给定尺寸的图像，该尺寸由用户给出

Question

我想访问我上传的1200 * 2000维度的上传图片。但是在访问时我想在PHP代码中以200 * 150（用户给定的值）维度访问它

Answer 1

在这种情况下，您必须将上传的图像调整为重击（200 * 150）和小（400 * 300）。这是jpg和jpeg图像。

$filename = 'source.jpg';

// Get new sizes
list($width, $height) = getimagesize($filename);
$thumb_width = 200;
$thumb_height = 150;

$small_width = 400;
$small_height = 300;

// Load
$thumb = imagecreatetruecolor($thumb_width, $thumb_height);
$small = imagecreatetruecolor($small_width, $small_height);

$source = imagecreatefromjpeg($filename);

// Resize thumb
imagecopyresized($thumb, $source, 0, 0, 0, 0, $thumb_width, $thumb_height, $width, $height);

// Resize small
imagecopyresized($small, $source, 0, 0, 0, 0, $small_width, $small_height, $width, $height);

// Output thumb
imagejpeg($thumb, "thumb.jpg");

// Output small
imagejpeg($small, "small.jpg");

//save memory
imagedestroy($thumb); 
imagedestroy($small);