Php 如何在codeignite中调整大小并创建其他缩略图？

我无法调整在上载模块中成功上载的照片的大小

我可以上传照片到适当的文件夹，但是我的大小调整不起作用，我还想同时在同一文件夹中创建一个缩略图副本

public function upload()
    {
        $this->load->library('session');
        $this->load->helper('url');
        $session_id = $this->session->userdata('id');
        $this->load->model('account_model');
        $user = $this->account_model->user();
        $data['user'] = $user;
        echo $user['id'];
        $user_folder = './uploads/' . $this->session->userdata('id');
        if(!is_dir($user_folder)){
            mkdir($user_folder, 0777);
        }
        $config['image_library'] = 'gd2';
        $config['source_image'] = $user_folder;
        $config['create_thumb'] = TRUE;
        $config['maintain_ratio'] = TRUE;
        $config['width']     = 50;
        $config['height']   = 50;

        $this->load->library('image_lib', $config); 

        $this->image_lib->resize();
        $config['upload_path'] = $user_folder;
        $config['allowed_types'] = 'gif|jpg|png';
        $config['max_size'] = '165';
        $config['max_width']  = '165';
        $config['max_height']  = '165';
        $config['overwrite'] = TRUE;

        $this->load->library('upload', $config);

        if ( ! $this->upload->do_upload())
        {
            $error = array('error' => $this->upload->display_errors());

            $data['main_content'] = '/account/upload';
            $this->load->view('includes/templates/main_page_template', $data);
        }
        else
        {
            $data = array('upload_data' => $this->upload->data());

            $data['main_content'] = '/account/success';
            $this->load->view('includes/templates/main_page_template', $data);
        }
    }

---

您可能需要将源映像的完整路径传递给服务器上的映像。因此，如果您试图使用/uploads，则可能需要将其设置为/var/www/html/uploads或该文件夹的任何完整路径，因为图像处理是相对于服务器的，而不是相对于站点url的，请尝试以下操作：

public function upload()
{
    $this->load->library('session');
    $this->load->helper('url');
    $session_id = $this->session->userdata('id');
    $this->load->model('account_model');
    $user = $this->account_model->user();
    $data['user'] = $user;
    echo $user['id'];
    $user_folder = './uploads/' . $this->session->userdata('id');
    if(!is_dir($user_folder)){
        mkdir($user_folder, 0777);
    }

    $this->load->library('image_lib');                      #load the image manipulation library without initiatlising it here.

    $configThumb['image_library']    = 'gd2';
    //$configThumb['source_image'] = $user_folder;
    $configThumb['create_thumb']     = TRUE;
    $configThumb['maintain_ratio']   = TRUE;
    $configThumb['width']            = 50;
    $configThumb['height']           = 50;



    //$this->image_lib->resize();
    $config['upload_path']      = $user_folder;
    $config['allowed_types']    = 'gif|jpg|png';
    $config['max_size']         = '165';
    $config['max_width']        = '165';
    $config['max_height']       = '165';
    $config['overwrite']        = TRUE;

    $this->load->library('upload', $config);

    if ( ! $this->upload->do_upload())
    {
        $error = array('error' => $this->upload->display_errors());
        $data['main_content'] = '/account/upload';
        $this->load->view('includes/templates/main_page_template', $data);
    }
    else
    {
        $configThumb['source_image']    = $uploadedDetails['full_path'];
        $this->image_lib->initialize($configThumb);                         #initialize the library here
        $this->image_lib->resize();                                         #resize is done here    
        $data = array('upload_data' => $this->upload->data());
        $data['main_content'] = '/account/success';
        $this->load->view('includes/templates/main_page_template', $data);
    }
}

完整路径是指上载到服务器的源映像。查看其他条件，您将获得想法。现在，更改是我们正在加载库并在上载图像后初始化它，因此我们从

$this->upload->data（）

获得完整路径

编辑：我的工作功能是将图像裁剪成两种不同的大小

function udpate_profile($userId = 0){
    $data   = array();
    //echo "<pre>";print_r($_POST);echo "</pre>";
    /* Upload Image */
    if($_FILES['image']['name'] != ""){
        //echo "<pre>";print_r($_FILES);echo "</pre>";
        //echo "enter";die;

        /* Check if previous file exists */
        $chkRs  = $this->db->select('image')->where('id', $this->session->userdata['logged_user']['id'])->get('admins');
        //echo $this->db->last_query();die;
        if($chkRs->num_rows() > 0){
            $chkD   = $chkRs->row_array();
            if($chkD['image'] != ""){
                ### delete the previous image ###
                $pathActual = './profile_images/';
                $pathMedium = './profile_images/medium/';
                $pathThumb  = './profile_images/thumbs/';
                if(file_exists($pathActual.$chkD['image'])){    #delete the actual image
                    unlink($pathActual.$chkD['image']);
                }
                if(file_exists($pathMedium.$chkD['image'])){    #delete the medium image
                    unlink($pathMedium.$chkD['image']);
                }
                if(file_exists($pathThumb.$chkD['image'])){    #delete the thumb image
                    unlink($pathThumb.$chkD['image']);
                }
                ### delete the previous image ###
            }
        }
        /* Check if previous file exists */

        //print_r($_FILES['image']);die;
        $this->load->library('image_lib');

        $configUpload['upload_path']    = './profile_images/';
        $configUpload['allowed_types']  = 'gif|jpg|png|bmp|jpeg';
        $configUpload['max_size']       = '0';
        $configUpload['max_width']      = '0';
        $configUpload['max_height']     = '0';
        $configUpload['encrypt_name']   = true;
        $this->load->library('upload', $configUpload);
        /* size 64*72 for comments */
        $configThumb = array();  
        $configThumb['image_library']   = 'gd2';  
        $configThumb['create_thumb']    = TRUE;
        $configThumb['new_image']       = './profile_images/thumbs/';  
        $configThumb['maintain_ratio']  = TRUE;
        $configThumb['width']           = 64;  
        $configThumb['height']          = 72;
        $configThumb['thumb_marker']    = "";
        //$this->load->library('image_lib');
        /* size 64*72 for comments */

        /* size 167*167 for profile page */
        $configThumbMedium = array();  
        $configThumbMedium['image_library']   = 'gd2';  
        $configThumbMedium['create_thumb']    = TRUE;
        $configThumbMedium['new_image']       = './profile_images/medium/';  
        $configThumbMedium['maintain_ratio']  = TRUE;
        $configThumbMedium['width']           = 167;  
        $configThumbMedium['height']          = 167;
        $configThumbMedium['thumb_marker']    = "";
        /* size 167*167 for profile page */

        if(!$this->upload->do_upload('image')){
            return 0;
        }

        $uploadedDetails    = $this->upload->data();
        if($uploadedDetails['is_image'] == 1){
            $configThumb['source_image']        = $uploadedDetails['full_path'];
            $configThumbMedium['source_image']  = $uploadedDetails['full_path'];
            $raw_name                           = $uploadedDetails['raw_name'];
            $file_ext                           = $uploadedDetails['file_ext']; 
            $imgname                            = $raw_name.$file_ext;
            $this->image_lib->initialize($configThumb);
            $this->image_lib->resize();
            $this->image_lib->initialize($configThumbMedium);
            $this->image_lib->resize();
        }
    }
    //die();
    /* Upload Image */

    $data   = $this->input->post(null);
    //echo "<pre>";print_r($data);echo "</pre>";die;
    if(isset($imgname) && $imgname != ""){
        $data['image']  = $imgname;
    }
    $this->db->where('id',$this->session->userdata['logged_user']['id'])->update('admins', $data);
    return 1;
}

函数udpate\u配置文件（$userId=0）{
$data=array（）；
//echo“”；print_r（$_POST）；echo“”；
/*上传图像*/
如果（$\u文件['image']['name']！=“”）{
//echo“”；打印（$文件）；echo“”；
//回声“进入”；死亡；
/*检查上一个文件是否存在*/
$chkRs=$this->db->select（'image'）->where（'id'，$this->session->userdata['logged_user']['id'）->get（'admins'）；
//echo$this->db->last_query（）；die；
如果（$chkRs->num_rows（）>0）{
$chkD=$chkRs->row_数组（）；
如果（$chkD['image']！=“”）{
###删除上一个图像###
$pathActual='./profile_images/'；
$pathMedium='./profile_images/medium/'；
$pathThumb='./profile_image/thumbs/'；
如果（文件_存在（$pathActual.$chkD['image']）{#删除实际图像
取消链接（$pathActual.$chkD['image']）；
}
如果（文件u存在（$pathmedia.$chkD['image']）{#删除介质映像
取消链接（$pathMedium.$chkD['image']）；
}
如果（文件_存在（$pathThumb.$chkD['image']）{#删除拇指图像
取消链接（$pathThumb.$chkD['image']）；
}
###删除上一个图像###
}
}
/*检查上一个文件是否存在*/
//打印（$_文件['image']）；模具；
$this->load->lib（'image_lib'）；
$configUpload['upload_path']='./profile_images/'；
$configUpload['allowed_types']='gif | jpg | png | bmp | jpeg'；
$configUpload['max_size']='0'；
$configUpload['max_width']='0'；
$configUpload['max_height']='0'；
$configUpload['encrypt_name']=true；
$this->load->library（'upload'，$configUpload）；
/*注释尺寸64*72*/
$configThumb=array（）；
$configThumb['image_library']='gd2'；
$configThumb['create_thumb']=TRUE；
$configThumb['new_image']='./profile_image/thumbs/'；
$configThumb['Maintent_ratio']=TRUE；
$configThumb['width']=64；
$configThumb['height']=72；
$configThumb['thumb_marker']=''；
//$this->load->lib（'image_lib'）；
/*注释尺寸64*72*/
/*个人资料页尺寸167*167*/
$ConfigThumbMedia=array（）；
$ConfigThumbMedia['image_library']='gd2'；
$ConfigThumbMedia['create_thumb']=TRUE；
$configThumbMedia['new_image']='./profile_images/medium/'；
$ConfigThumbMedia['Maintent_ratio']=TRUE；
$ConfigThumbMedia['width']=167；
$configThumbMedium['height']=167；
$configThumbMedium['thumb_marker']=''；
/*个人资料页尺寸167*167*/
如果（！$this->upload->do_upload（'image'））{
返回0；
}
$uploadedDetails=$this->upload->data（）；
如果（$uploadedDetails['is_image']==1）{
$configThumb['source_image']=$uploadedDetails['full_path']；
$ConfigThumbMedia['source_image']=$uploadedDetails['full_path']；
$raw_name=$uploadedDetails['raw_name']；
$file_ext=$uploadedDetails['file_ext']；
$imgname=$raw\u name.$file\u ext；
$this->image\u lib->initialize（$configThumb）；
$this->image_lib->resize（）；
$this->image\u lib->initialize（$ConfigThumbMedia）；
$this->image_lib->resize（）；
}
}
//模具（）；
/*上传图像*/
$data=$this->input->post（空）；
//echo“”；print_r（$data）；echo“”；die；
if（isset（$imgname）&&$imgname！=“”）{
$data['image']=$imgname；
}
$this->db->where（'id'，$this->session->userdata['logged_user']['id']）->update（'admins'，$data）；
返回1；
}

您检查过日志文件了吗？我检查过，但没有发现任何会显示大小调整不起作用的内容。您是否对我应该查找的内容或基于我的代码的内容有建议。请删除日志文件并尝试调整图像大小，然后将图像粘贴到此处。不幸的是，当我上载的图像小于指定尺寸时，它的大小与照片预裁剪的大小相同，如果我试图上传一张更大的照片，它根本不会上传。我也遇到过同样的问题。至于您建议的“上传后需要提供源图像的完整路径”，您指的是显示路径吗？或者您指的是将上载方法中的路径设置为完整路径。如果是，我不知道你的意思。再次感谢通过代码我做了一些修改，希望它现在能工作@LightningWristI恐怕没有上传