php - 以不同的宽度和高度保存裁剪后的图像

Question

我正在使用 jcrop裁剪图像。

这是我上传图片和裁剪的表格。

                <form id="upload_form" enctype="multipart/form-data" method="post" action="upload.php" onsubmit="return checkForm()">
                <!-- hidden crop params -->
                <input type="hidden" id="x1" name="x1" />
                <input type="hidden" id="y1" name="y1" />
                <input type="hidden" id="x2" name="x2" />
                <input type="hidden" id="y2" name="y2" />

                <div><input type="file" name="image_file" id="image_file" onchange="fileSelectHandler()" /></div>

                <div class="error"></div>

                <div class="step2">
                    <h2>Step2: Please select a crop region</h2>
                    <img id="preview" />

                    <div class="info">
                        <label>File size</label> <input type="text" id="filesize" name="filesize" />
                        <label>Type</label> <input type="text" id="filetype" name="filetype" />
                        <label>Image dimension</label> <input type="text" id="filedim" name="filedim" />
                        <label>W</label> <input type="text" id="w" name="w" />
                        <label>H</label> <input type="text" id="h" name="h" />
                    </div>

                    <input type="submit" value="Upload" />
                </div>
            </form>

upload.php 文件，它将裁剪后的图像上传到 avatar 目录。

<?php function uploadImageFile() { // Note: GD library is required for this function

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $iWidth = $iHeight = 200; // desired image result dimensions
    $iJpgQuality = 90;

    if ($_FILES) {

        // if no errors and size less than 250kb
        if (! $_FILES['image_file']['error'] && $_FILES['image_file']['size'] < 250 * 1024) {
            if (is_uploaded_file($_FILES['image_file']['tmp_name'])) {

                // new unique filename
                $sTempFileName = 'avatar/' . md5(time().rand());

                // move uploaded file into cache folder
                move_uploaded_file($_FILES['image_file']['tmp_name'], $sTempFileName);

                // change file permission to 644
                @chmod($sTempFileName, 0644);

                if (file_exists($sTempFileName) && filesize($sTempFileName) > 0) {
                    $aSize = getimagesize($sTempFileName); // try to obtain image info
                    if (!$aSize) {
                        @unlink($sTempFileName);
                        return;
                    }

                    // check for image type
                    switch($aSize[2]) {
                        case IMAGETYPE_JPEG:
                            $sExt = '.jpg';

                            // create a new image from file 
                            $vImg = @imagecreatefromjpeg($sTempFileName);
                            break;
                        /*case IMAGETYPE_GIF:
                            $sExt = '.gif';

                            // create a new image from file 
                            $vImg = @imagecreatefromgif($sTempFileName);
                            break;*/
                        case IMAGETYPE_PNG:
                            $sExt = '.png';

                            // create a new image from file 
                            $vImg = @imagecreatefrompng($sTempFileName);
                            break;
                        default:
                            @unlink($sTempFileName);
                            return;
                    }

                    // create a new true color image
                    $vDstImg = @imagecreatetruecolor( $iWidth, $iHeight );

                    // copy and resize part of an image with resampling
                    imagecopyresampled($vDstImg, $vImg, 0, 0, (int)$_POST['x1'], (int)$_POST['y1'], $iWidth, $iHeight, (int)$_POST['w'], (int)$_POST['h']);

                    // define a result image filename
                    $sResultFileName = $sTempFileName . $sExt;

                    // output image to file
                    imagejpeg($vDstImg, $sResultFileName, $iJpgQuality);
                    @unlink($sTempFileName);

                    return $sResultFileName;
                }
            }
        }
    }
}
}

  $sImage = uploadImageFile();
  echo '<img src="'.$sImage.'" />';
  ?>

我的问题:

现在它只是将裁剪后的图像上传到 avatar 目录，宽度和高度为 200px。

我还想将裁剪后的图像上传到另外两个目录

1. avatar1 宽高500px

2. avatar2宽高700px

我们将不胜感激。

Answer 1

为您的函数添加参数，例如uploadImageFile($dirName, $iWidth, $iHeight) 然后用不同的尺寸多次调用它

<?php 
    function uploadImageFile() { // Note: GD library is required for this function

    if ($_SERVER['REQUEST_METHOD'] == 'POST') {
        $iJpgQuality = 90;

        if ($_FILES) {
            // if no errors and size less than 250kb
            if (! $_FILES['image_file']['error'] && $_FILES['image_file']['size'] < 250 * 1024) {
                if (is_uploaded_file($_FILES['image_file']['tmp_name'])) {
                    if (!is_dir('avatar')) {
                        mkdir('avatar');
                    }
                    // new unique filename
                    $sTempFileName = 'avatar/' . md5(time().rand());
                    // move uploaded file into cache folder
                    move_uploaded_file($_FILES['image_file']['tmp_name'], $sTempFileName);

                    // change file permission to 644
                    @chmod($sTempFileName, 0644);

                    $sResultFileName = copyImageFile('avatar', $sTempFileName, 200, 200, $iJpgQuality);
                    if ($sResultFileName) {
                        copyImageFile('avatar1', $sTempFileName, 500, 500);
                        copyImageFile('avatar2', $sTempFileName, 700, 700);
                        @unlink($sTempFileName);

                        return $sResultFileName;
                    }
                }
            }
        }
    }
    return false;
}

function copyImageFile($dirName, $originImageName, $iWidth, $iHeight, $iJpgQuality = 90) {
    if (file_exists($originImageName) && filesize($originImageName) > 0) {        
        $aSize = getimagesize($originImageName); // try to obtain image info
        if (!$aSize) {
            @unlink($originImageName);
            return;
        }

        // check for image type
        switch($aSize[2]) {
            case IMAGETYPE_JPEG:
                $sExt = '.jpg';
                $vImg = @imagecreatefromjpeg($originImageName);
                break;
            /*case IMAGETYPE_GIF:
                $sExt = '.gif';

                // create a new image from file 
                $vImg = @imagecreatefromgif($sTempFileName);
                break;*/
            case IMAGETYPE_PNG:
                $sExt = '.png';
                $vImg = @imagecreatefrompng($originImageName);
                break;
            default:
                @unlink($originImageName);
                return;
        }

        // create a new true color image
        $vDstImg = @imagecreatetruecolor( $iWidth, $iHeight );

        // copy and resize part of an image with resampling
        imagecopyresampled($vDstImg, $vImg, 0, 0, (int)$_POST['x1'], (int)$_POST['y1'], $iWidth, $iHeight, (int)$_POST['w'], (int)$_POST['h']);

        // define a result image filename        
        if (!is_dir($dirName)) {
            mkdir($dirName);
        }
        $newImageName = $dirName . DIRECTORY_SEPARATOR . md5(time().rand()) . $sExt;

        // output image to file
        imagejpeg($vDstImg, $newImageName, $iJpgQuality);
        //@unlink($sTempFileName);

        return $newImageName;
    }

    return false;
}

$sImage = uploadImageFile();
echo '<img src="'.$sImage.'" />';
?>