文件名另存为NULL到数据库

时间：2018-06-29 18:30:54

标签： php sql file-upload

我正在使用以下代码将多个文件名上传，重命名并保存到数据库表中。

PHP： 

   require('../includes/config.php');
$apdtitle = htmlspecialchars(trim(filter_input(INPUT_POST, 'apdtitle')));
$apdcategory = 'Education';
$apdsubcategory = 'Books';
$pnumber = htmlspecialchars(trim(filter_input(INPUT_POST, 'pnumber')));
$prodprice = htmlspecialchars(trim(filter_input(INPUT_POST, 'prodprice')));
$apddescription = htmlspecialchars(trim(filter_input(INPUT_POST, 'apddescription')));
$location = htmlspecialchars(trim(filter_input(INPUT_POST, 'pstloct')));
$view = '1';
$added_on = date('d-M-y');
$status = 'active';
$username ='sanoj';
if (!empty($_POST)) {
    if (isset($_FILES['files'])) {
        $uploadedFiles = array();
        foreach ($_FILES['files']['tmp_name'] as $key => $tmp_name) {
            $errors = array();
            $file_name = md5(uniqid("") . time());
            $file_size = $_FILES['files']['size'][$key];
            $file_tmp = $_FILES['files']['tmp_name'][$key];
            $file_type = $_FILES['files']['type'][$key];
            if ($file_type == "image/gif") {
                $sExt = ".gif";
            } elseif ($file_type == "image/jpeg" || $file_type == "image/pjpeg") {
                $sExt = ".jpg";
            } elseif ($file_type == "image/png" || $file_type == "image/x-png") {
                $sExt = ".png";
            }
            if (!in_array($sExt, array('.gif', '.jpg', '.png'))) {
                $errors[] = "Image types alowed are (.gif, .jpg, .png) only!";
            }
            if ($file_size > 2097152000) {
                $errors[] = 'File size must be less than 2 MB';
            }
            $desired_dir = "../upload/";
            $d = compress($file_tmp, "$desired_dir/" . $file_name . $sExt, 60);
            if (empty($errors)) {
                if (is_dir($desired_dir) == false) {
                    mkdir("$desired_dir", 0700);
                }
                if
                (move_uploaded_file($file_tmp, "$desired_dir/" . $file_name . $sExt )) {
                    $uploadedFiles[$key] = array($file_name . $sExt, 1);
                } else {
                    echo "Couldn't upload file " . $_FILES['files']['name'][$key];
                    $uploadedFiles[$key] = array($_FILES['files']['name'][$key], 0);
                }
            } else {

            }
        }
        foreach ($uploadedFiles as $key => $row) {
            if (!empty($row[1])) {
                $codestr = '$file' . ($key + 1) . ' = $row[0];';
                eval($codestr);
            } else {
                $codestr = '$file' . ($key + 1) . ' = NULL;';
                eval($codestr);
            }
        }
    }
    $orig_directory = "$desired_dir";
    $thumb_directory = "../upload/thumb/";
    $dir_handle = opendir($orig_directory);
    if ($dir_handle > 1) {
        $allowed_types = array('jpg', 'jpeg', 'gif', 'png');
        $file_type = array();
        $ext = '';
        $title = '';
        $i = 0;
        while ($file_name = readdir($dir_handle)) {
            if ($file_name == '.' || $file_name == '..') {
                continue;
            }
            $file_type = \explode('.', $file_name);
            $ext = strtolower(array_pop($file_type));
            $title1 = implode('.', $file_type);
            $title = htmlspecialchars($title1);
            if (in_array($ext, $allowed_types)) {
                $nw = 250;
                $nh = 180;
                $source = "$desired_dir{$file_name}";
                $stype1 = explode(".", $source);
                $stype = $stype1[count($stype1) - 1];
                $dest = "../upload/thumb/{$file_name}";
                $size = getimagesize($source);
                $w = $size[0];
                $h = $size[1];
                switch ($stype) {
                    case 'gif':
                        $simg = imagecreatefromgif($source);
                        break;
                    case 'jpg':
                        $simg = imagecreatefromjpeg($source);
                        break;
                    case 'png':
                        $simg = imagecreatefrompng($source);
                        break;
                }
                $dimg = resizePreservingAspectRatio($simg, $nw, $nh);
                imagepng($dimg, $dest);
            }
        }closedir($dir_handle);
    }
    $stmt = $db->prepare("INSERT INTO allpostdata(apdtitle, apdcategory, apdsubcategory, posted, usernme, view, location, pnumber, prodprice, apddescription, img1, img2, img3, img4, status)"
            . " VALUES (:apdtitle, :apdcategory, :apdsubcategory, :posted, :usernme, :view, :location, :pnumber, :prodprice, :apddescription, :img1, :img2, :img3, :img4, :status)");
    $stmt->bindParam(':apdtitle', $apdtitle, PDO::PARAM_STR, 100);
    $stmt->bindParam(':apdcategory', $apdcategory, PDO::PARAM_STR, 100);
    $stmt->bindParam(':apdsubcategory', $apdsubcategory, PDO::PARAM_STR, 100);
    $stmt->bindParam(':posted', $added_on, PDO::PARAM_STR, 100);
    $stmt->bindParam(':usernme', $username, PDO::PARAM_STR, 100);
    $stmt->bindParam(':view', $view, PDO::PARAM_STR, 100);
    $stmt->bindParam(':location', $location, PDO::PARAM_STR, 100);
    $stmt->bindParam(':pnumber', $pnumber, PDO::PARAM_STR, 100);
    $stmt->bindParam(':prodprice', $prodprice, PDO::PARAM_STR, 100);
    $stmt->bindParam(':apddescription', $apddescription, PDO::PARAM_STR, 100);
    $stmt->bindParam(':status', $status, PDO::PARAM_STR, 6);
    $stmt->bindParam(':img1', $file1);
    $stmt->bindParam(':img2', $file2);
    $stmt->bindParam(':img3', $file3);
    $stmt->bindParam(':img4', $file4);
    if ($stmt->execute()) {
        header('Location: ../../index.php');
    }exit;
}

function compress($source, $destination, $quality) {
    $info = getimagesize($source);
    if ($info['mime'] == 'image/jpeg') {
        $image = imagecreatefromjpeg($source);
    } elseif ($info['mime'] == 'image/gif') {
        $image = imagecreatefromgif($source);
    } elseif ($info['mime'] == 'image/png') {
        $image = imagecreatefrompng($source);
    }
    imagejpeg($image, $destination, $quality);
    return $destination;
}

function resizePreservingAspectRatio($img, $targetWidth, $targetHeight) {
    $srcWidth = imagesx($img);
    $srcHeight = imagesy($img);
    $srcRatio = $srcWidth / $srcHeight;
    $targetRatio = $targetWidth / $targetHeight;
    if (($srcWidth <= $targetWidth) && ($srcHeight <= $targetHeight)) {
        $imgTargetWidth = $srcWidth;
        $imgTargetHeight = $srcHeight;
    } else if ($targetRatio > $srcRatio) {
        $imgTargetWidth = (int) ($targetHeight * $srcRatio);
        $imgTargetHeight = $targetHeight;
    } else {
        $imgTargetWidth = $targetWidth;
        $imgTargetHeight = (int) ($targetWidth / $srcRatio);
    }
    $targetImg = imagecreatetruecolor($targetWidth, $targetHeight);
    $targetTransparent = imagecolorallocate($targetImg, 255, 0, 255);
    imagefill($targetImg, 0, 0, $targetTransparent);
    imagecolortransparent($targetImg, $targetTransparent);
    imagecopyresampled($targetImg, $img, 0, 0, 0, 0, $targetWidth, $targetHeight, $srcWidth, $srcHeight);
    return $targetImg;
}

所有其他输入已正确保存到数据库表中，但未保存上载的图像名称。它们被保存为NULL值。

有人可以找出代码中的错误吗？

压缩 

function compress($source, $destination, $quality) {
    $info = getimagesize($source);
    if ($info['mime'] == 'image/jpeg') {
        $image = imagecreatefromjpeg($source);
    } elseif ($info['mime'] == 'image/gif') {
        $image = imagecreatefromgif($source);
    } elseif ($info['mime'] == 'image/png') {
        $image = imagecreatefrompng($source);
    }
    imagejpeg($image, $destination, $quality);
    return $destination;
}

2 个答案:

答案 0 :(得分：0)

最后找到的解决方案，/下面的代码可以将文件名上传并保存到数据库，并且可以压缩上传的图像。

编码 

if (!empty($_POST)) {
    if (isset($_FILES['files'])) {
        $uploadedFiles = array();
        foreach ($_FILES['files']['tmp_name'] as $key => $tmp_name) {
            $errors = array();
            $file_name = md5(uniqid("") . time());
            $file_size = $_FILES['files']['size'][$key];
            $file_tmp = $_FILES['files']['tmp_name'][$key];
            $file_type = $_FILES['files']['type'][$key];
            if ($file_type == "image/gif") {
                $sExt = ".gif";
            } elseif ($file_type == "image/jpeg" || $file_type == "image/pjpeg") {
                $sExt = ".jpg";
            } elseif ($file_type == "image/png" || $file_type == "image/x-png") {
                $sExt = ".png";
            }
            if (!in_array($sExt, array('.gif', '.jpg', '.png'))) {
                $errors[] = "Image types alowed are (.gif, .jpg, .png) only!";
            }
            if ($file_size > 2097152000) {
                $errors[] = 'File size must be less than 2 MB';
            }
            $desired_dir = "../upload/";

            if (empty($errors)) {
                if (is_dir($desired_dir) == false) {
                    mkdir("$desired_dir", 0700);
                }
                if
                (move_uploaded_file($file_tmp, "$desired_dir/" . $file_name . $sExt)) {
                    $uploadedFiles[$key] = array($file_name . $sExt, 1);
                } else {
                    echo "Couldn't upload file " . $_FILES['files']['tmp_name'][$key];
                    $uploadedFiles[$key] = array($_FILES['files']['tmp_name'][$key], 0);
                }
            } else {

            }
        }
        foreach ($uploadedFiles as $key => $row) {
            if (!empty($row[1])) {
                $codestr = '$file' . ($key + 1) . ' = $row[0];';
                eval($codestr);
            } else {
                $codestr = '$file' . ($key + 1) . ' = NULL;';
                eval($codestr);
            }
        }
    }
    $orig_directory = "$desired_dir";
    $thumb_directory = "../upload/thumb/";
    $dir_handle = opendir($orig_directory);
    if ($dir_handle > 1) {
        $allowed_types = array('jpg', 'jpeg', 'gif', 'png');
        $file_type = array();
        $ext = '';
        $title = '';
        $i = 0;
        while ($file_name = readdir($dir_handle)) {
            if ($file_name == '.' || $file_name == '..') {
                continue;
            }
            $file_type = \explode('.', $file_name);
            $ext = strtolower(array_pop($file_type));
            $title1 = implode('.', $file_type);
            $title = htmlspecialchars($title1);
            if (in_array($ext, $allowed_types)) {
                $nw = 250;
                $nh = 180;
                $source = "$desired_dir{$file_name}";
                $stype1 = explode(".", $source);
                $stype = $stype1[count($stype1) - 1];
                $dest = "../upload/thumb/{$file_name}";
                $size = getimagesize($source);
                $w = $size[0];
                $h = $size[1];
                switch ($stype) {
                    case 'gif':
                        $simg = imagecreatefromgif($source);
                        break;
                    case 'jpg':
                        $simg = imagecreatefromjpeg($source);
                        break;
                    case 'png':
                        $simg = imagecreatefrompng($source);
                        break;
                }
                $dimg = resizePreservingAspectRatio($simg, $nw, $nh);
                imagepng($dimg, $dest);
                compress($source, "$desired_dir/" . $file_name, 50);
            }
        }closedir($dir_handle);
    }
    $stmt = $db->prepare("INSERT INTO allpostdata(apdtitle, apdcategory, apdsubcategory, brand, model, posted, usernme, view, location, pnumber, prodprice, apddescription, img1, img2, img3, img4, status)"
            . " VALUES (:apdtitle, :apdcategory, :apdsubcategory, :brand, :model, :posted, :usernme, :view, :location, :pnumber, :prodprice, :apddescription, :img1, :img2, :img3, :img4, :status)");
    $stmt->bindParam(':apdtitle', $apdtitle, PDO::PARAM_STR, 100);
    $stmt->bindParam(':apdcategory', $apdcategory, PDO::PARAM_STR, 100);
    $stmt->bindParam(':apdsubcategory', $apdsubcategory, PDO::PARAM_STR, 100);
    $stmt->bindParam(':brand', $pstbrnd, PDO::PARAM_STR, 100);
    $stmt->bindParam(':model', $pstmdl, PDO::PARAM_STR, 100);
    $stmt->bindParam(':posted', $added_on, PDO::PARAM_STR, 100);
    $stmt->bindParam(':usernme', $username, PDO::PARAM_STR, 100);
    $stmt->bindParam(':view', $view, PDO::PARAM_STR, 100);
    $stmt->bindParam(':location', $location, PDO::PARAM_STR, 100);
    $stmt->bindParam(':pnumber', $pnumber, PDO::PARAM_STR, 100);
    $stmt->bindParam(':prodprice', $prodprice, PDO::PARAM_STR, 100);
    $stmt->bindParam(':apddescription', $apddescription, PDO::PARAM_STR, 100);
    $stmt->bindParam(':status', $status, PDO::PARAM_STR, 6);
    $stmt->bindParam(':img1', $file1);
    $stmt->bindParam(':img2', $file2);
    $stmt->bindParam(':img3', $file3);
    $stmt->bindParam(':img4', $file4);
    if ($stmt->execute()) {
        header('Location: index.php');
    }exit;
}

function compress($source, $destination, $quality) {
    $info = getimagesize($source);
    if ($info['mime'] == 'image/jpeg') {
        $image = imagecreatefromjpeg($source);
    } elseif ($info['mime'] == 'image/gif') {
        $image = imagecreatefromgif($source);
    } elseif ($info['mime'] == 'image/png') {
        $image = imagecreatefrompng($source);
    }
    imagejpeg($image, $destination, $quality);
    return $destination;
}

function resizePreservingAspectRatio($img, $targetWidth, $targetHeight) {
    $srcWidth = imagesx($img);
    $srcHeight = imagesy($img);
    $srcRatio = $srcWidth / $srcHeight;
    $targetRatio = $targetWidth / $targetHeight;
    if (($srcWidth <= $targetWidth) && ($srcHeight <= $targetHeight)) {
        $imgTargetWidth = $srcWidth;
        $imgTargetHeight = $srcHeight;
    } else if ($targetRatio > $srcRatio) {
        $imgTargetWidth = (int) ($targetHeight * $srcRatio);
        $imgTargetHeight = $targetHeight;
    } else {
        $imgTargetWidth = $targetWidth;
        $imgTargetHeight = (int) ($targetWidth / $srcRatio);
    }
    $targetImg = imagecreatetruecolor($targetWidth, $targetHeight);
    $targetTransparent = imagecolorallocate($targetImg, 255, 0, 255);
    imagefill($targetImg, 0, 0, $targetTransparent);
    imagecolortransparent($targetImg, $targetTransparent);
    imagecopyresampled($targetImg, $img, 0, 0, 0, 0, $targetWidth, $targetHeight, $srcWidth, $srcHeight);
    return $targetImg;
}

答案 1 :(得分：-1)

根据评论中的讨论，您肯定需要从move_uploaded_file()中删除第三个参数，这将满足您将图像名称保存到数据库中的第一个需求。

关于优化图像，您可以使用this GIT Hub库。它使用JpegOptim和PngQuant之类的命令行工具，可以帮助您生成图像的无损优化。这将通过不损失质量来减小图像的尺寸。您的两个目的都会解决。

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