Php創建固定寬度和高度的圖像拇指

Question

夥計們，我知道這個問題之前被問過，但它不一樣，因爲我已經嘗試了別人的答案，沒有任何工作，因爲我想。

我想用PHP和縮略圖寬度=「265px」和高度=「125px」創建縮略圖，這裏是我的代碼：

$image_width = $imageSize[0]; 
$image_height = $imageSize[1]; 

$new_size = ($image_width + $image_height)/($image_width * ($image_height/45));   //this will set any image to 125*70 which is a good thumbnail 

$new_width = $image_width * $new_size; 
$new_height = $image_height * $new_size; 

if($ext == "gif"){ 
    $old_image = imagecreatefromgif($real_image_path); 
}else if($ext =="png"){ 
    $old_image = imagecreatefrompng($real_image_path); 
}else{ 
    $old_image = imagecreatefromjpeg($real_image_path); 
} 

$new_image = imagecreatetruecolor($new_width, $new_height);              //creating new image with a new color for quality 

imagecopyresized($new_image, $old_image, 0, 0, 0, 0, $new_width, $new_height, $image_width, $image_height); 

我不是很肯定我評論，但我只是寫他們，以防萬一

我覺得需要有人說是數學好

感謝和新年快樂

Answer 1

無需數學..

if($ext == "gif"){ 
    $old_image = imagecreatefromgif($real_image_path); 
}else if($ext =="png"){ 
    $old_image = imagecreatefrompng($real_image_path); 
}else{ 
    $old_image = imagecreatefromjpeg($real_image_path); 
} 
$data = getimagesize($real_image_path); 

$height = 125; 
$width = 265; 
$thumb = imagecreatetruecolor($width, $height); 
imagealphablending($thumb, false); 
imagesavealpha($thumb, true); 
imagecopyresampled($thumb, $old_image, 0, 0, 0, 0, $width, $height, $data[0], $data[1]);