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我有这个将图像存储到目录中的上传脚本。我想知道如何在上传第一张图片的同时创建具有不同名称和大小的第二张图片以存储在同一目录中。

第一个图像将保持其原始大小并重命名为 pic1.jpg，我希望第二个图像的大小为 90px x 90px 并保存为“thumb_pic1.jpg”

有人可以帮忙吗。谢谢。

<?php
session_start()
?>
<?
$filename = addslashes($filename);

$sql=mysql_query('INSERT INTO ptb_photos SET file_name ="$filename",id="$_SESSION[user_id]", user_id="$_SESSION[user_id]"');

// LOG
$log = '=== ' . @date('Y-m-d H:i:s') . ' ===============================' . "\n"
        . 'FILES:' . print_r($_FILES, 1) . "\n"
        . 'POST:' . print_r($_POST, 1) . "\n";
$fp = fopen('upload-log.txt', 'a');
fwrite($fp, $log);
fclose($fp);


// Result object
$r = new stdClass();
// Result content type
header('content-type: application/json');


// Maximum file size
$maxsize = 10; //Mb
// File size control
if ($_FILES['xfile']['size'] > ($maxsize * 1048576)) {
    $r->error = "Max file size: $maxsize Kb";
}


// Uploading folder
$folder = 'files/';
if (!is_dir($folder))
    mkdir($folder);

// If specifics folder 
$folder .= $_POST['folder'] ? $_POST['folder'] . '/' : '';
if (!is_dir($folder))
    mkdir($folder);

// PASS USER_ID HERE
$folder2 = '../'. '../'. 'data/'. 'photos/'. $_SESSION['user_id'] . '/';
if (!is_dir($folder2))
    mkdir($folder2);

// New directory with 'files/USER_SESSION_ID/'
$folder = $newDir . $folder2;


// If the file is an image
if (preg_match('/image/i', $_FILES['xfile']['type'])) {

    $filename = $_POST['value'] ? $_POST['value'] :
            $folder . 'pic1.jpg';


} else {

    $tld = split(',', $_FILES['xfile']['name']);
    $tld = $tld[count($tld) - 1];
    $filename = $_POST['value'] ? $_POST['value'] :
            $folder . sha1(@microtime() . '-' . $_FILES['xfile']['name']) . $tld;
}


// Supporting image file types
$types = Array('image/png', 'image/gif', 'image/jpeg');
// File type control
if (in_array($_FILES['xfile']['type'], $types)) {
    // Create an unique file name    
    // Uploaded file source
    $source = file_get_contents($_FILES["xfile"]["tmp_name"]);
    // Image resize
    imageresize($source, $filename, $_POST['width'], $_POST['height'], $_POST['crop'], $_POST['quality']);
} else
// If the file is not an image
if (in_array($_FILES['xfile']['type'], $types)) 
    move_uploaded_file($_FILES["xfile"]["tmp_name"], $filename);



// File path
$path = str_replace('upload_image_1.php', '', $_SERVER['SCRIPT_NAME']);

// Result data
$r->filename = $filename;
$r->path = $path;
$r->img = '<img src="' . $path . $filename . '" alt="image" />';

// Return to JSON
echo json_encode($r);

// Image resize function with php + gd2 lib
function imageresize($source, $destination, $width = 0, $height = 0, $crop = false, $quality = 80) {
    $quality = $quality ? $quality : 80;
    $image = imagecreatefromstring($source);
    if ($image) {
        // Get dimensions
        $w = imagesx($image);
        $h = imagesy($image);
        if (($width && $w > $width) || ($height && $h > $height)) {
            $ratio = $w / $h;
            if (($ratio >= 1 || $height == 0) && $width && !$crop) {
                $new_height = $width / $ratio;
                $new_width = $width;
            } elseif ($crop && $ratio <= ($width / $height)) {
                $new_height = $width / $ratio;
                $new_width = $width;
            } else {
                $new_width = $height * $ratio;
                $new_height = $height;
            }
        } else {
            $new_width = $w;
            $new_height = $h;
        }
        $x_mid = $new_width * .5;  //horizontal middle
        $y_mid = $new_height * .5; //vertical middle
        // Resample
        error_log('height: ' . $new_height . ' - width: ' . $new_width);
        $new = imagecreatetruecolor(round($new_width), round($new_height));
        imagecopyresampled($new, $image, 0, 0, 0, 0, $new_width, $new_height, $w, $h);
        // Crop
        if ($crop) {
            $crop = imagecreatetruecolor($width ? $width : $new_width, $height ? $height : $new_height);
            imagecopyresampled($crop, $new, 0, 0, ($x_mid - ($width * .5)), 0, $width, $height, $width, $height);
            //($y_mid - ($height * .5))
        }
        // Output
        // Enable interlancing [for progressive JPEG]
        imageinterlace($crop ? $crop : $new, true);

        $dext = strtolower(pathinfo($destination, PATHINFO_EXTENSION));
        if ($dext == '') {
            $dext = $ext;
            $destination .= '.' . $ext;
        }
        switch ($dext) {
            case 'jpeg':
            case 'jpg':
                imagejpeg($crop ? $crop : $new, $destination, $quality);
                break;
            case 'png':
                $pngQuality = ($quality - 100) / 11.111111;
                $pngQuality = round(abs($pngQuality));
                imagepng($crop ? $crop : $new, $destination, $pngQuality);
                break;
            case 'gif':
                imagegif($crop ? $crop : $new, $destination);
                break;
        }
        @imagedestroy($image);
        @imagedestroy($new);
        @imagedestroy($crop);


    }
}


?>
4

1 回答 1

0

我建议不要自己调整大小，而是使用 Imagick。它具有大量用于在 PHP 中修改图像的好功能，包括调整大小。

http://php.net/manual/en/book.imagick.php

于 2012-12-18T00:42:50.700 回答