PHP resizeImage函数代码示例

function resizeImageCond($imagem, $maxw = 500, $maxh = 500, $watermarkArray = array(), $bg = "FFFFFF", $forceJPG = false)
{
    $ih = @getimagesize($imagem);
    if ($ih) {
        $ow = $ih[0];
        // original
        $oh = $ih[1];
        if (count($watermarkArray) > 0 && !is_array($watermarkArray[0]) && $watermarkArray[0][0] == "C" && $ow > $maxw && $oh >= $maxh) {
            // will crop, so $w and $h are the max (if original image is larger or equal to the thumb)
            $w = $maxw;
            $h = $maxh;
        } else {
            // either NOT crop, or crop but the image is smaller
            $w = $ow;
            $h = $oh;
            if ($maxw > 0) {
                // width surpassed, limit it
                if ($w > $maxw) {
                    $w = $maxw;
                    $h = floor($oh / $ow * $w);
                }
            }
            if ($maxh > 0) {
                // heiht surpassed, limit it
                if ($h > $maxh) {
                    $h = $maxh;
                    $w = floor($ow / $oh * $h);
                }
            }
        }
        if ($w != $ow || $h != $oh || count($watermarkArray) > 0) {
            // if reduce OR watermark present, proceed
            $imagemtmp = $imagem . "tmp";
            if (resizeImage($imagem, $imagemtmp, $w, $h, CONS_JPGQUALITY, $watermarkArray, $bg, $forceJPG)) {
                @unlink($imagem);
                locateFile($imagemtmp, $ext);
                // the resizeImage added .jpg or .png as per required
                if (!@copy($imagemtmp, $imagem)) {
                    @unlink($imagemtmp);
                    return 2;
                    // error copying temporary file to destination file
                }
                // save ok
                $temp = umask(0);
                chmod($imagem, 0775);
                umask($temp);
                @unlink($imagemtmp);
                return 1;
                // ok!
            } else {
                return 2;
            }
            // error
        }
    } else {
        return 2;
    }
    return 0;
    // no change required
}

function hacknrollify($picfilename)
{
    $logofilename = "logo.png";
    $logoPicPath = "logopics/" . $logofilename;
    $originalPicPath = "originalpics/" . $picfilename;
    $editedfilename = "hnr_" . $picfilename;
    $editedPicPath = "editedpics/" . $editedfilename;
    // read the original image from file
    $profilepic = imagecreatefromjpeg($originalPicPath);
    $profilepicWidth = imagesx($profilepic);
    $profilepicHeight = imagesy($profilepic);
    // create the black image overlay
    $blackoverlay = imagecreate($profilepicWidth, $profilepicHeight);
    imagecolorallocate($blackoverlay, 0, 0, 0);
    // then merge the black and profilepic
    imagecopymerge($profilepic, $blackoverlay, 0, 0, 0, 0, $profilepicWidth, $profilepicHeight, 50);
    imagedestroy($blackoverlay);
    // merge the resized logo
    $logo = resizeImage($logoPicPath, $profilepicWidth - 80, 999999);
    imageAlphaBlending($logo, false);
    imageSaveAlpha($logo, true);
    $logoWidth = imagesx($logo);
    $logoHeight = imagesy($logo);
    $verticalOffset = $profilepicHeight / 2 - $logoHeight / 2;
    $horizontalOffset = 40;
    imagecopyresampled($profilepic, $logo, $horizontalOffset, $verticalOffset, 0, 0, $logoWidth, $logoHeight, $logoWidth, $logoHeight);
    $mergeSuccess = imagejpeg($profilepic, $editedPicPath);
    if (!$mergeSuccess) {
        echo "Image merge failed!";
    }
    imagedestroy($profilepic);
    imagedestroy($logo);
    return $editedPicPath;
}

/**
 * Insert image data to database (recoreded_data and thumbnail).
 * First generate an unique image id, then insert image to recoreded_data and resized image to thubnail along with 
 *   other given data
 */
function uploadImage($conn, $sensor_id, $date_created, $description)
{
    $image_id = generateId($conn, "images");
    if ($image_id == 0) {
        return;
    }
    $image2 = file_get_contents($_FILES['file_image']['tmp_name']);
    $image2tmp = resizeImage($_FILES['file_image']);
    $image2Thumbnail = file_get_contents($image2tmp['tmp_name']);
    // encode the stream
    $image = base64_encode($image2);
    $imageThumbnail = base64_encode($image2Thumbnail);
    $sql = "INSERT INTO images (image_id, sensor_id, date_created, description, thumbnail, recoreded_data)\n                      VALUES(" . $image_id . ", " . $sensor_id . ", TO_DATE('" . $date_created . "', 'DD/MM/YYYY hh24:mi:ss'), '" . $description . "', empty_blob(), empty_blob())\n                       RETURNING thumbnail, recoreded_data INTO :thumbnail, :recoreded_data";
    $result = oci_parse($conn, $sql);
    $recoreded_dataBlob = oci_new_descriptor($conn, OCI_D_LOB);
    $thumbnailBlob = oci_new_descriptor($conn, OCI_D_LOB);
    oci_bind_by_name($result, ":recoreded_data", $recoreded_dataBlob, -1, OCI_B_BLOB);
    oci_bind_by_name($result, ":thumbnail", $thumbnailBlob, -1, OCI_B_BLOB);
    $res = oci_execute($result, OCI_DEFAULT) or die("Unable to execute query");
    if ($recoreded_dataBlob->save($image) && $thumbnailBlob->save($imageThumbnail)) {
        oci_commit($conn);
    } else {
        oci_rollback($conn);
    }
    oci_free_statement($result);
    $recoreded_dataBlob->free();
    $thumbnailBlob->free();
    echo "New image is added with image_id ->" . $image_id . "<br>";
}

 public function index()
 {
     if ($_SESSION['access'] > $this->access['rr']) {
         die('Access denied');
     }
     if (isset($_POST['action']) && $_POST['action'] == 'save') {
         $this->updateSlider();
     }
     if (isset($_SESSION['msg']) && $_SESSION['msg'] == 'success') {
         $this->data['text_message'] = $this->language['changes_applied'];
         $this->data['class_message'] = 'success';
         unset($_SESSION['msg']);
     }
     if (isset($_SESSION['msg']) && $_SESSION['msg'] == 'denied') {
         $this->data['text_message'] = $this->language['access_denied'];
         $this->data['class_message'] = 'error';
         unset($_SESSION['msg']);
     }
     $this->engine->document->addScript('template/js/qfinder/qfinder.js');
     $slides = isset($this->params['slides']) ? $this->params['slides'] : array();
     $this->data['slides'] = $slides;
     resizeImage(ROOT_DIR . 'upload/images/no-image.jpg', 90, 80, false);
     foreach ($slides as $id => $slide) {
         $this->data['slides'][$id] = array('src' => $slide['src'], 'thumb' => resizeImage($slide['src'], 90, 80, false), 'link' => $slide['link']);
     }
     $this->data['breadcrumbs'][] = array('caption' => $this->language['home'], 'link' => ADM_PATH);
     $this->data['breadcrumbs'][] = array('caption' => $this->language['modules'], 'link' => 'index.php?page=modules');
     $this->data['breadcrumb_cur'] = $this->language['slider'];
     $this->template = 'template/slider.tpl';
 }

 function process()
 {
     global $DB, $CFG, $MOBILE_LANGS, $DEFAULT_LANG, $MEDIA;
     $cm = get_coursemodule_from_id('url', $this->id);
     $this->url = $DB->get_record('url', array('id' => $cm->instance), '*', MUST_EXIST);
     $context = context_module::instance($cm->id);
     $this->md5 = md5($this->url->externalurl) . $this->id;
     $eiffilename = extractImageFile($this->url->intro, 'mod_url', 'intro', '0', $context->id, $this->courseroot, $cm->id);
     if ($eiffilename) {
         $this->resource_image = "/images/" . resizeImage($this->courseroot . "/" . $eiffilename, $this->courseroot . "/images/" . $cm->id, $CFG->block_oppia_mobile_export_thumb_width, $CFG->block_oppia_mobile_export_thumb_height);
         //delete original image
         unlink($this->courseroot . "/" . $eiffilename) or die(get_string('error_file_delete', 'block_oppia_mobile_export'));
     }
     unset($eiffilename);
 }

function getUploadedImage($width = null, $height = null)
{
    $ret = false;
    $img_taille = 0;
    $img_nom = '';
    $taille_max = 20000000;
    $ret = is_uploaded_file($_FILES['Filedata']['tmp_name']);
    if (!$ret) {
        error_log('Problème de transfert (Erreur php : ' . $_FILES['Filedata'] . ')');
        return false;
    } else {
        // Le fichier a bien été reçu
        $img_taille = $_FILES['Filedata']['size'];
        if ($img_taille > $taille_max) {
            error_log("Trop gros !");
            return false;
        }
        $img_nom = $_FILES['Filedata']['name'];
    }
    // Redimensionnement de l'image
    // Hauteur image destination
    $source_file = $_FILES['Filedata']['tmp_name'];
    // Fichier d'origine
    // Cacul des nouvelles dimensions
    $fileParts = pathinfo($_FILES['Filedata']['name']);
    if (substr_count(strtolower($fileParts['extension']), "jpg") > 0 || substr_count($fileParts['extension'], "jpeg") > 0) {
        $source_image = imagecreatefromjpeg($source_file);
    } else {
        if (substr_count(strtolower($fileParts['extension']), "png") > 0) {
            $source_image = imagecreatefrompng($source_file);
        } else {
            if (substr_count(strtolower($fileParts['extension']), "gif") > 0) {
                $source_image = imagecreatefromgif($source_file);
            } else {
                return false;
            }
        }
    }
    if ($width == null && $height == null) {
        ob_start();
        imagejpeg($source_image);
        $contents = ob_get_contents();
        ob_end_clean();
        return $contents;
    } else {
        return resizeImage($source_image, $width, $height);
    }
}

function resize()
{
    $image = $_GET['image'];
    $height = $_GET['height'];
    $width = $_GET['width'];
    $file = md5($image . $height . $width);
    $image = strstr($image, '?', true) ?: $image;
    $ext = parse_url($image);
    $ext = pathinfo($ext['path'], PATHINFO_EXTENSION);
    if (!file_exists(dirname(dirname(__FILE__)) . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR . $file . "." . $ext)) {
        $output = resizeImage(dirname(dirname(__FILE__)) . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR . $file . "." . $ext, file_get_contents($image), $width, $height, 1, 'file');
    }
    header("HTTP/1.1 301 Moved Permanently");
    header("Location: " . BASE_URL . "cache/" . $file . "." . $ext . "\r\n");
    exit;
}

function changeAvatar()
{
    $post = isset($_POST) ? $_POST : array();
    $max_width = "500";
    $userId = isset($post['hdn-profile-id']) ? intval($post['hdn-profile-id']) : 0;
    $path = 'images/tmp';
    $valid_formats = array("jpg", "png", "gif", "bmp", "jpeg");
    $name = $_FILES['photoimg']['name'];
    $size = $_FILES['photoimg']['size'];
    if (strlen($name)) {
        list($txt, $ext) = explode(".", $name);
        if (in_array($ext, $valid_formats)) {
            if ($size < 1024 * 1024) {
                $actual_image_name = 'avatar' . '_' . $userId . '.' . $ext;
                $filePath = $path . '/' . $actual_image_name;
                $tmp = $_FILES['photoimg']['tmp_name'];
                if (move_uploaded_file($tmp, $filePath)) {
                    $width = getWidth($filePath);
                    $height = getHeight($filePath);
                    //Scale the image if it is greater than the width set above
                    if ($width > $max_width) {
                        $scale = $max_width / $width;
                        $uploaded = resizeImage($filePath, $width, $height, $scale);
                    } else {
                        $scale = 1;
                        $uploaded = resizeImage($filePath, $width, $height, $scale);
                    }
                    /*$res = saveAvatar(array(
                      'userId' => isset($userId) ? intval($userId) : 0,
                                              'avatar' => isset($actual_image_name) ? $actual_image_name : '',
                      ));*/
                    //mysql_query("UPDATE users SET profile_image='$actual_image_name' WHERE uid='$session_id'");
                    echo "<img id='photo' file-name='" . $actual_image_name . "' class='' src='" . $filePath . '?' . time() . "' class='preview'/>";
                } else {
                    echo "failed";
                }
            } else {
                echo "Image file size max 1 MB";
            }
        } else {
            echo "Invalid file format..";
        }
    } else {
        echo "Please select image..!";
    }
    exit;
}

function getData()
{
    $tmpName = $_FILES['file']['tmp_name'];
    assertNotEmpty($tmpName, "missing file");
    $imageWidth = getParameter("imageWidth");
    $imageHeight = getParameter("imageHeight");
    $contentType = getContentType();
    debug($contentType);
    if (($contentType == "image/jpeg" || $contentType == "image/x-png" || $contentType == "image/png" || $contentType == "image/gif") && !empty($imageWidth) && !empty($imageHeight)) {
        resizeImage($tmpName, $imageWidth, $imageHeight);
    }
    $fp = fopen($tmpName, 'r');
    $length = filesize($tmpName);
    debug("File size: {$length}");
    $content = fread($fp, $length);
    fclose($fp);
    return $content;
}

 private function fillCategory($category_id)
 {
     $limit = $this->params['count_per_page'];
     $start = ($this->engine->url->page_n - 1) * $limit;
     $q = $this->engine->db->query("SELECT id, parent_id, caption_" . $_SESSION['lang'] . " as caption, description_" . $_SESSION['lang'] . " as description, text_" . $_SESSION['lang'] . " as `text`, title_" . $_SESSION['lang'] . " as title, kw_" . $_SESSION['lang'] . " as kw, descr_" . $_SESSION['lang'] . " as descr FROM " . DB_PREF . "materials WHERE id='" . (int) $category_id . "' AND is_category=1 AND enabled=1 ORDER BY date_added DESC");
     if (empty($q->row)) {
         $this->engine->ERROR_404 = true;
         return false;
     } else {
         $category = $q->row;
         $breadcrumbs = array();
         $this->buildBreadcrumbs($category['id'], $breadcrumbs);
         $this->data['breadcrumbs'][0] = array('caption' => '<i class="glyphicon glyphicon-home"></i>', 'link' => $this->engine->url->link('route=home'));
         foreach ($breadcrumbs as $breadcrumb) {
             $this->data['breadcrumbs'][] = array('caption' => $breadcrumb['caption_' . $_SESSION['lang']], 'link' => $this->engine->url->link('route=materials&material_id=' . $breadcrumb['id']));
         }
         $this->data['category'] = array('caption' => $category['caption'], 'description' => $category['description'], 'text' => $category['text']);
         if ($category['title'] != '') {
             $this->engine->document->setTitle($category['title']);
         }
         if ($category['kw'] != '') {
             $this->engine->document->setKeywords($category['kw']);
         }
         if ($category['descr'] != '') {
             $this->engine->document->setDescription($category['descr']);
         }
         $categories = $this->engine->db->query("SELECT id, caption_" . $_SESSION['lang'] . " as caption, description_" . $_SESSION['lang'] . " as description, text_" . $_SESSION['lang'] . " as text, preview FROM " . DB_PREF . "materials WHERE parent_id=" . (int) $category_id . " AND enabled=1 AND is_category = 1 ORDER BY  date_added DESC")->rows;
         $this->data['categories'] = array();
         foreach ($categories as $category) {
             $this->data['categories'][$category['id']] = array('link' => $this->engine->url->link('route=materials&material_id=' . $category['id']), 'caption' => $category['caption'], 'preview' => resizeImage($category['preview'], 100, 100), 'description' => $category['description'], 'text' => $category['text']);
         }
         $materials = $this->engine->db->query("SELECT id, caption_" . $_SESSION['lang'] . " as caption, description_" . $_SESSION['lang'] . " as description, preview, date_added FROM " . DB_PREF . "materials WHERE parent_id=" . (int) $category_id . " AND enabled = 1 AND is_category = 0 ORDER BY date_added DESC LIMIT " . $start . ", " . $limit)->rows;
         $this->data['materials'] = array();
         foreach ($materials as $material) {
             $this->data['materials'][$material['id']] = array('link' => $this->engine->url->link('route=materials&material_id=' . $material['id']), 'caption' => $material['caption'], 'preview' => resizeImage($material['preview'], 150, 150), 'date_added' => $material['date_added'], 'description' => $material['description']);
         }
         $this->data['details_caption'] = $this->params['details_' . $_SESSION['lang']];
         $page_count = $this->getPageCount((int) $category_id, (int) $this->params['count_per_page']);
         $this->data['pagination'] = printPagination($page_count, $this->engine->uri);
         $this->mode = 1;
         $this->engine->ERROR_404 = false;
         return true;
     }
 }

function fileUpload($imgFile)
{
    $file_path = $_SESSION['rootDir'] . '/images/gallery/' . basename($imgFile["name"]);
    if (fileExists($file_path)) {
        if (move_uploaded_file($imgFile["tmp_name"], $file_path)) {
            resizeImage($file_path);
            return 'images/gallery/' . basename($imgFile["name"]);
        } else {
            $_SESSION['status'] = 'error';
            $_SESSION['flashData'] = 'File can not be uploaded';
            header('location:' . baseUrl . 'admin/gallery/');
            exit;
        }
    } else {
        $_SESSION['status'] = 'error';
        $_SESSION['flashData'] = 'Same file cannot be uploaded twice';
        header('location:' . baseUrl . 'admin/gallery/');
    }
}

function thumbsize($file, $size)
{
    if (!preg_match("/(\\.gif|\\.jpeg|.\\jpg|\\.png|\\.bmp)/i", $file)) {
        return $url;
    }
    if ($size) {
        if (!is_dir(THUMB_DIR . "/" . $size)) {
            mkdir(THUMB_DIR . "/" . $size, 777);
        }
        $path = explode("/", $file);
        $fullfile = array_pop($path);
        $second = array_pop($path);
        if (!is_dir(THUMB_DIR . "/" . $size . "/" . $second)) {
            mkdir(THUMB_DIR . "/" . $size . "/" . $second, 777);
        }
        $wh = explode("_", $size);
        if (count($wh) != 2) {
            return $file;
        }
        $width = intval($wh[0]);
        $height = intval($wh[1]);
        if ($width == 0 || $height == 0) {
            return $file;
        }
        $ext = substr($fullfile, strrpos($fullfile, '.') + 1);
        $noext = substr($fullfile, 0, strrpos($fullfile, '.'));
        $thumbfile = THUMB_DIR . "/" . $size . "/{$second}/" . "{$noext}" . "_{$width}" . "_{$height}" . "." . $ext;
        if (file_exists($thumbfile)) {
            return MPIC_1 . $thumbfile;
        } else {
            if (resizeImage($file, $width, $height, $thumbfile)) {
                return MPIC_1 . $thumbfile;
            }
        }
    } else {
        return $url;
    }
}

 public function index()
 {
     if (!$this->engine->url->is_category) {
         $this->engine->ERROR_404 = false;
         $this->engine->document->setTitle($this->params['title_' . $_SESSION['lang']]);
         $this->engine->document->setKeywords($this->params['kw_' . $_SESSION['lang']]);
         $this->engine->document->setDescription($this->params['descr_' . $_SESSION['lang']]);
         $this->data['leave_review_btn'] = $this->params['leave_review_btn_' . $_SESSION['lang']];
         $this->data['form_caption'] = $this->params['form_caption_' . $_SESSION['lang']];
         $this->data['name_placeholder'] = $this->params['name_placeholder_' . $_SESSION['lang']];
         $this->data['email_placeholder'] = $this->params['email_placeholder_' . $_SESSION['lang']];
         $this->data['review_placeholder'] = $this->params['review_placeholder_' . $_SESSION['lang']];
         $this->data['post_btn'] = $this->params['post_btn_' . $_SESSION['lang']];
         $this->data['cancel_btn'] = $this->params['cancel_btn_' . $_SESSION['lang']];
         $this->data['error_name'] = $this->params['error_name_' . $_SESSION['lang']];
         $this->data['error_text'] = $this->params['error_text_' . $_SESSION['lang']];
         $reviews = $this->getReviews(0, 50);
         foreach ($reviews as $review) {
             $this->data['reviews'][] = array('name' => $review['name'], 'post' => $review['post'], 'rating' => $review['rating'], 'photo' => resizeImage($review['photo'], 150, 150));
         }
         $this->template = TEMPLATE . 'template/modules/site_reviews.tpl';
     }
 }

 private function findPhoto($start = 1, $limit = 20)
 {
     $dir = dirname(dirname(__FILE__)) . ROOT_DIR . 'upload/images/photos/';
     $photos = array();
     $i = 0;
     foreach (glob($dir . "*.*") as $filename) {
         $i++;
         if ($i > $limit + $start - 1) {
             break;
         }
         $filepath = $filename;
         $filepath = str_replace('\\', '/', $filepath);
         $path_parts = pathinfo($filepath);
         $photos[$i]['src'] = ROOT_DIR . 'upload/images/photos/' . $path_parts['basename'];
         $photos[$i]['thumb'] = resizeImage(ROOT_DIR . 'upload/images/photos/' . $path_parts['basename'], 150, 150);
     }
     if ($start > 1) {
         for ($i = 1; $i < $start; $i++) {
             unset($photos[$i]);
         }
     }
     return $photos;
 }

 /**
  * 保存缩略图图片到本地
  *
  * @param string 图片原url
  * @return string 图片保存名
  */
 function save_image($image_source_url, $image_new_name)
 {
     //包含gd库，处理图片
     include "fn_gd.php";
     if (preg_match("/jpg/i", $image_source_url)) {
         $src_im = imagecreatefromjpeg($image_source_url);
         if (!$src_im) {
             throw new Exception("载入jpeg图片错误！");
         }
         return resizeImage($src_im, 230, 230, 'images/', $image_new_name, '.jpg');
     } else {
         if (preg_match("/png/i", $image_source_url)) {
             $src_im = imagecreatefrompng($image_source_url);
             if (!$src_im) {
                 throw new Exception("载入png图片错误！");
             }
             return resizeImage($src_im, 230, 230, 'images/', $image_new_name, '.png');
         } else {
             if (preg_match("/gif/i", $image_source_url)) {
                 $src_im = imagecreatefromgif($image_source_url);
                 if (!$src_im) {
                     throw new Exception("载入gif图片错误！");
                 }
                 return resizeImage($src_im, 230, 230, 'images/', $image_new_name, '.gif');
             }
         }
     }
     throw new Exception("无法识别的图片类型！");
 }