提问人：viyrag 提问时间：10/27/2023 最后编辑：viyrag 更新时间：10/27/2023 访问量：17
php 如果调整图像大小添加水印
php if resize image add watermark
问：
您好，我有php函数，我需要知道如何在imageresize水印中添加这个函数。
private function resizeImageTo1MB($imageData)
{
$maxSize = 1024 * 1024; // 1MB
$tmpFilePath = $imageData['tmp_name'];
list($width, $height) = getimagesize($tmpFilePath);
$zdroj = getimagesize($tmpFilePath);
$mime = $zdroj['mime'];
$aspectRatio = $width / $height;
// Calculate new dimensions to maintain aspect ratio and reduce size
$newWidth = sqrt($maxSize * $aspectRatio);
$newHeight = $newWidth / $aspectRatio;
// Create a new image with the calculated dimensions
$newImage = imagecreatetruecolor($newWidth, $newHeight);
switch($mime){
case 'image/jpeg':
$source = imagecreatefromjpeg($tmpFilePath);
break;
case 'image/png':
$source = imagecreatefrompng($tmpFilePath);
break;
case 'image/gif':
$source = imagecreatefromgif($tmpFilePath);
break;
default:
$source = imagecreatefromjpeg($tmpFilePath);
}
// $source = imagecreatefromjpeg($tmpFilePath); // Change this to the appropriate image type (e.g., imagecreatefrompng)
// Resize the image
imagecopyresampled($newImage, $source, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
// Save the resized image back to the temporary file
imagejpeg($newImage, $tmpFilePath); // Change this to the appropriate image type (e.g., imagepng)
$imageData['size'] = filesize($tmpFilePath);
return $imageData;
}
谢谢
我想在最终图像中添加水印，但我尝试了更多解决方案，但无法:(
答：
0赞
hanif zekri
10/27/2023
#1
这是我为个人使用而编写的课程，拥有您需要的一切。如果您需要示例，请查看我的 GitHub：
https://github.com/hanifzekri/handleFile/tree/main
<?php
class handleFile {
public $file, $fileMime, $fileSize, $sizeFormat, $isAnimate;
public function getFile($file) {
if (file_exists($file)) {
$this->file = stripslashes(trim($file));
return $this->file;
} else {
return false;
}
}
public function size($format='k', $round=0) {
$size = filesize($this->file);
if ($format == 'k') $size = $size / 1024;
if ($format == 'm') $size = $size / (1024*1024);
if ($format == 'g') $size = $size / (1024*1024*1024);
$size = round($size, $round);
$this->fileSize = $size;
$this->sizeFormat = $format;
return $this->fileSize;
}
function mime(){
$mimeLists = array('image/png' => 'png',
'image/jpeg' => 'jpeg',
'image/jpeg' => 'jpg',
'image/gif' => 'gif',
'image/bmp' => 'bmp',
'image/x-ms-bmp' => 'bmp',
'image/vnd.microsoft.icon' => 'ico',
'image/x-icon' => 'ico',
'image/webp' => 'webp',
'application/zip' => 'zip',
'application/x-rar-compressed' => 'rar',
'application/x-rar' => 'rar',
'application/x-shockwave-flash' => 'swf',
'video/x-flv' => 'flv',
'audio/mpeg' => 'mp3',
'application/octet-stream' => 'mp3',
'audio/flac' => 'flac',
'audio/ogg' => 'ogg',
'video/mp4' => 'mp4',
'video/x-matroska' => 'mkv',
'video/webm' => 'webm',
'application/pdf' => 'pdf',
'image/vnd.adobe.photoshop' => 'psd',
'application/postscript' => 'ai',
'application/postscript' => 'eps',
'application/postscript' => 'ps',
'application/msword' => 'doc',
'application/msword' => 'docx',
'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => 'docx',
'application/vnd.ms-excel' => 'xls',
'application/vnd.ms-excel' => 'xlsx',
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'xlsx',
'application/vnd.ms-powerpoint' => 'ppt',
'application/vnd.ms-powerpoint' => 'pptx',
'application/vnd.openxmlformats-officedocument.presentationml.presentation' => 'pptx',
'application/rtf' => 'rtf',
'application/jar' => 'app',
'application/vnd.android.package-archive' => 'apk',
//add as much as you want !
);
if (function_exists('finfo_open')) {
$fileInfo = finfo_open(FILEINFO_MIME);
$mimeType = finfo_file($fileInfo, $this->file);
finfo_close($fileInfo);
$explodeMime = explode(";", $mimeType);
$mimeType = $explodeMime[0];
if (isset($mimeLists[$mimeType])) {
$this->fileMime = $mimeLists[$mimeType];
return $this->fileMime;
} else {
return false;
}
} elseif(function_exists('mime_content_type')){
$mimeType = mime_content_type($this->file);
if (isset($mimeLists[$mimeType])) {
$this->fileMime = $mimeLists[$mimeType];
return $this->fileMime;
} else {
return false;
}
} else {
return false;
}
}
function isAnimate() {
$fileContents = file_get_contents($this->file);
$stringLocation = 0;
$count = 0;
while ($count < 2) { //There is no point in continuing after 2nd frame
$where1 = strpos($fileContents, "\x00\x21\xF9\x04", $stringLocation);
if ($where1 === FALSE) break;
else {
$stringLocation = $where1 + 1;
$where2 = strpos($fileContents, "\x00\x2C", $stringLocation);
if ($where2 === FALSE) break;
else {
if ($where1 + 8 == $where2) $count++;
$stringLocation = $where2 + 1;
}
}
}
if ($count > 1) {
$this->isAnimate = true;
return $this->isAnimate;
} else {
return false;
}
}
function upload($locat='', $newName='') {
if ($newName == '') $newName = uniqid();
if ($this->fileMime != false) {
$fileName = $newName . '.' . $this->fileMime;
$newPath = $locat . $fileName;
$copied = copy($this->file, $newPath);
if ($copied) {
$this->file = $newPath;
return $this->file;
} else {
return false;
}
} else {
return false;
}
}
function resize($newWidth, $copySuffix='', $compress=90) {
if ($newWidth < 1) {
return false;
} elseif ($this->fileMime != 'jpg' && $this->fileMime != 'jpeg' && $this->fileMime != 'png' && $this->fileMime != 'gif') {
return false;
} elseif ($this->fileMime == 'gif' and $this->isAnimate == true) {
//If you need to resize an animate gif, add resizeGIF function here and remove line blow.
return false;
} else {
switch($this->fileMime) {
case('jpg'): $creation = imagecreatefromjpeg($this->file); break;
case('jpeg'): $creation = imagecreatefromjpeg($this->file); break;
case('png'): $creation = imagecreatefrompng($this->file); break;
case('gif'): $creation = imagecreatefromgif($this->file); break;
}
$width = imagesx($creation);
$height = imagesy($creation);
$newHeight = floor($height*($newWidth/$width));
$virtual = imagecreatetruecolor($newWidth, $newHeight);
if ($this->fileMime == 'png') {
imagealphablending($virtual, false);
imagesavealpha($virtual,true);
$transparency = imagecolorallocatealpha($virtual, 255, 255, 255, 127);
imagefilledrectangle($virtual, 0, 0, $newWidth, $newHeight, $transparency);
}
imagecopyresized($virtual, $creation, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
if ($copySuffix == '') {
unlink($this->file);
} else {
$explodePath = explode("/", $this->file);
$explodeName = explode(".", end($explodePath));
$explodeMime = end($explodeName);
array_pop($explodePath);
array_pop($explodeName);
$newPath = implode("/", $explodePath) . '/';
$newPath .= implode(".", $explodeName);
$newPath .= $copySuffix . '.' . $explodeMime;
$this->file = $newPath;
}
switch($this->fileMime) {
case('jpg'): imagejpeg($virtual, $this->file, $compress); break;
case('jpeg'): imagejpeg($virtual, $this->file, $compress); break;
case('png'): imagepng($virtual, $this->file, round($compress/10)); break;
case('gif'): imagegif($virtual, $this->file); break;
}
return $this->file;
}
}
function watermark($watermark, $sizeRate=30, $compress=90, $positionX='left', $positionY='bottom') {
if (!file_exists($watermark)) {
return false;
} else {
$watermarkClear = stripslashes(strtolower(trim($watermark)));
$watermarkExplode = explode(".", $watermarkClear);
$watermarkMime = end($watermarkExplode);
if ($watermarkMime != 'jpg' && $watermarkMime != 'jpeg' && $watermarkMime != 'png' && $watermarkMime != 'gif') {
return false;
} else {
switch($this->fileMime) {
case('jpg'): $creation = imagecreatefromjpeg($this->file); break;
case('jpeg'): $creation = imagecreatefromjpeg($this->file); break;
case('png'): $creation = imagecreatefrompng($this->file); break;
case('gif'): $creation = imagecreatefromgif($this->file); break;
}
switch($watermarkMime) {
case('jpg'): $creationWM = imagecreatefromjpeg($watermark); break;
case('jpeg'): $creationWM = imagecreatefromjpeg($watermark); break;
case('png'): $creationWM = imagecreatefrompng($watermark); break;
case('gif'): $creationWM = imagecreatefromgif($watermark); break;
}
imagealphablending($creation, true);
imagesavealpha($creation, true);
$fileWidth = imagesx($creation);
$fileHeight = imagesy($creation);
$watermarkWidth = imagesx($creationWM);
$watermarkHeight = imagesy($creationWM);
$watermarkNewWidth = floor($fileWidth * ($sizeRate / 100));
$watermarkNewHeight = floor($watermarkHeight*($watermarkNewWidth/$watermarkWidth));
if ($positionX == 'left') $Xpos = 0;
else $Xpos = $fileWidth - $watermarkNewWidth;
if ($positionY == 'top') $Ypos = 0;
else $Ypos = $fileHeight - $watermarkNewHeight;
imagecopyresized($creation, $creationWM, $Xpos, $Ypos, 0, 0, $watermarkNewWidth, $watermarkNewHeight, $watermarkWidth, $watermarkHeight);
switch($this->fileMime) {
case('jpg'): imagejpeg($creation, $this->file, $compress); break;
case('jpeg'): imagejpeg($creation, $this->file, $compress); break;
case('png'): imagepng($creation, $this->file, round($compress/10)); break;
case('gif'): imagegif($creation, $this->file); break;
}
return $this->file;
}
}
}
function crop($targetWidth, $targetHeight, $copySuffix='', $from='center', $compress=90){
if ($targetWidth < 1 || $targetHeight < 1) {
return false;
} elseif ($this->fileMime != 'jpg' && $this->fileMime != 'jpeg' && $this->fileMime != 'png' && $this->fileMime != 'gif') {
return false;
} elseif ($this->fileMime == 'gif' && $this->isAnimate == true) {
//If you need to crop an animate gif, add cropGIF function here and remove line blow.
return false;
} else {
switch($this->fileMime) {
case('jpg'): $creation = imagecreatefromjpeg($this->file); break;
case('jpeg'): $creation = imagecreatefromjpeg($this->file); break;
case('png'): $creation = imagecreatefrompng($this->file); break;
case('gif'): $creation = imagecreatefromgif($this->file); break;
}
$width = imagesx($creation);
$height = imagesy($creation);
if ($width <= $height) {
$newWidth = $targetWidth;
$newHeight = floor($height*($targetWidth/$width));
switch($from) {
case('topleft'): $PosX = 0; $PosY = 0; break;
case('topright'): $PosX = floor($newWidth - $targetWidth); $PosY = 0; break;
case('bottomleft'): $PosX = 0; $PosY = floor($newHeight - $targetHeight); break;
case('bottomright'): $PosX = floor($newWidth - $targetWidth); $PosY = floor($newHeight - $targetHeight); break;
default: $PosX = 0; $PosY = floor(($newHeight - $targetHeight)/2);; break;
}
} else {
$newWidth = floor($width*($targetHeight/$height));
$newHeight = $targetHeight;
switch($from) {
case('topleft'): $PosX = 0; $PosY = 0; break;
case('topright'): $PosX = floor($newWidth - $targetWidth); $PosY = 0; break;
case('bottomleft'): $PosX = 0; $PosY = floor($newHeight - $targetHeight); break;
case('bottomright'): $PosX = floor($newWidth - $targetWidth); $PosY = floor($newHeight - $targetHeight); break;
default: $PosX = floor(($newWidth - $targetWidth)/2); $PosY = 0; break;
}
}
$virtual = imagecreatetruecolor($newWidth, $newHeight);
imagecopyresized($virtual, $creation, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
$option = ['x' => $PosX, 'y' => $PosY, 'width' => $targetWidth, 'height' => $targetHeight];
$virtual = imagecrop($virtual, $option);
if ($copySuffix == '') {
unlink($this->file);
} else {
$explodePath = explode("/", $this->file);
$explodeName = explode(".", end($explodePath));
$explodeMime = end($explodeName);
array_pop($explodePath);
array_pop($explodeName);
$newPath = implode("/", $explodePath) . '/';
$newPath .= implode(".", $explodeName);
$newPath .= $copySuffix . '.' . $explodeMime;
$this->file = $newPath;
}
switch($this->fileMime) {
case('jpg'): imagejpeg($virtual, $this->file, $compress); break;
case('jpeg'): imagejpeg($virtual, $this->file, $compress); break;
case('png'): imagepng($virtual, $this->file, round($compress/10)); break;
case('gif'): imagegif($virtual, $this->file); break;
}
return $this->file;
}
}
}
?>
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