Thinkphp Upload class implementation code to upload pictures

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thinkphp How to upload pictures? Here is a detailed introduction to you!

1. Package Upload class method

<?php//Call upload Public Function Uploaduser () {   $banner = $this->uploadymdimg (' Ymd_banner ');   if (!empty ($banner)) {  $data [' Ymd_banner ']= $banner;   }}   /* * Package image upload * */public function uploadymdimg ($fileName, $route = "banner") {if (!empty ($_files[$fileName] [' tmp_name '])) {    $upload = new \think\upload ();//Instantiate upload class    $upload->maxsize   =     3145728;//Set attachment upload size    $upload Exts      =     Array (' jpg ', ' gif ', ' PNG ', ' jpeg ');//Set attachment upload type    $upload->rootpath  =      './upload/'. $route. ' /'; Set attachments upload root directory    //upload Single file     $info   =   $upload->uploadone ($_files[$fileName]);    if (! $info) {//Upload error message        $this->error ($upload->geterror ());    } else{//upload successfully upload file information        return C (' tmpl_parse_string.__yimudi__ '). ' /upload/'. $route. ' /'. $info [' Savepath ']. $info [' Savename '];}   } Else{return NULL;}}

2, thinkphp internal definition of the upload class

<?php//+----------------------------------------------------------------------//| thinkphp [WE CAN do it JUST THINK it]//+----------------------------------------------------------------------//| Copyright (c) 2006-2016 http://thinkphp.cn All rights reserved.//+--------------------------------------------------         --------------------namespace Think;class Upload {/** * default upload configuration * @var array */private $config = Array ( ' mimes ' = = Array (),//Allow upload of file MIME type ' maxSize ' = + 0,//upload file size limit (0-No limit) ' exts ' = = Array (),//allow upload of file suffix ' autosub ' = = true,//Auto subdirectory save file ' subname ' = = array       (' Date ', ' y-m-d '),//subdirectory creation mode, [0]-function name, [1]-parameter, multiple parameters using array ' rootpath ' + './uploads/',//Save root path ' Savepath ' = = ',//save path ' savename ' = = Array (' uniqid ', '),//upload file naming rules, [0]-function name, [1]-parameter, multiple arguments using array ' Save Ext ' = = ',//File save suffix, empty use original suffix ' replace ' = False,//exists with the same name whether to overwrite ' hash ' + true,//whether to generate hash code ' callback ' = false,//detect if the file exists callback, if present    Returns the file information array ' driver ' + ',//File upload driver ' driverconfig ' = = Array (),//upload drive configuration); /** * Upload Error message * @var String */private $error = ';    Upload error message/** * Upload Driver instance * @var Object */private $uploader; /** * Construction method for constructing an upload instance * @param array $config configuration * @param string $driver The upload driver local-local upload driver to use, FTP-FTP upload driver * /Public Function __construct ($config = Array (), $driver = ", $driverConfig = null) {/* get configuration */$this-&G        T;config = Array_merge ($this->config, $config);        /* Set Upload driver */$this->setdriver ($driver, $driverConfig);                /* Adjust the configuration to convert the string configuration parameter to an array */if (!empty ($this->config[' mimes ')) {if (is_string ($this->mimes)) {            $this->config[' mimes '] = explode (', ', $this->mimes); } $this->config[' mimes ' = arrAy_map (' Strtolower ', $this->mimes); } if (!empty ($this->config[' exts ')) {if (is_string ($this->exts)) {$this->config[            ' exts '] = explode (', ', $this->exts);        } $this->config[' exts ' = Array_map (' Strtolower ', $this->exts);  }}/** * Use $this->name to get configuration * @param string $name configuration name * @return Multitype Configuration value */public    function __get ($name) {return $this->config[$name];  Public Function __set ($name, $value) {if (Isset ($this->config[$name])) {$this->config[$name] =            $value; if ($name = = ' Driverconfig ') {//Change drive configuration after reset upload driver//NOTE: You must select Change driver and then change Drive configuration $this             Setdriver ();    }}} Public function __isset ($name) {return isset ($this->config[$name]); }/** * Gets the last upload error message * @return string error message */Public function GetError () {return $this-> error; /** * Upload a single file * @param array of $file files * @return The file information after the successful upload of the array * * Public function Uplo        Adone ($file) {$info = $this->upload (Array ($file)); Return $info?    $info [0]: $info; /** * Upload file * @param file information array $files, usually $_files array */Public function upload ($files = ") {if (' =        = = $files) {$files = $_files; } if (empty ($files)) {$this->error = ' no uploaded file!            ';        return false; }/* detects the upload root directory */if (! $this->uploader->checkrootpath ($this->rootpath)) {$this->error =            $this->uploader->geterror ();        return false; }/* Check the Upload directory */if (! $this->uploader->checksavepath ($this->savepath)) {$this->error = $            This->uploader->geterror ();        return false;        }/* Detect and upload files individually */$info = array (); if (function_exists (' Finfo_open ')) {$finfo   = Finfo_open (Fileinfo_mime_type);            }//To the uploaded file array information processing $files = $this->dealfiles ($files);            foreach ($files as $key = + $file) {$file [' name '] = strip_tags ($file [' name ']);            if (!isset ($file [' key ')]) $file [' key '] = $key;  /* Get file types by extension to resolve problems with the Flash upload $files array return file type Error */if (Isset ($finfo)) {$file [' type '] = Finfo_file            ($finfo, $file [' tmp_name ']);            }/* Get upload file suffix, allow upload no suffix file */$file [' ext '] = pathinfo ($file [' name '], pathinfo_extension);            /* File Upload detection */if (! $this->check ($file)) {continue;                }/* Gets the file hash */if ($this->hash) {$file [' md5 '] = md5_file ($file [' tmp_name ']);            $file [' sha1 '] = sha1_file ($file [' tmp_name ']);            }/* Call the callback function to detect if the file exists */$data = Call_user_func ($this->callback, $file); if ($this->callbaCK && $data) {if (File_exists ('. ').                    $data [' path ']) {$info [$key] = $data;                Continue            }elseif ($this->removetrash) {call_user_func ($this->removetrash, $data);//delete trash according to}            }/* Generate save File name */$savename = $this->getsavename ($file);            if (false = = $savename) {continue;            } else {$file [' savename '] = $savename;            }/* Detects and creates subdirectories */$subpath = $this->getsubpath ($file [' name ']);            if (false = = = $subpath) {continue;            } else {$file [' savepath '] = $this->savepath. $subpath;            }/* Strict detection of image files */$ext = Strtolower ($file [' ext ']); if (In_array ($ext, Array (' gif ', ' jpg ', ' jpeg ', ' BMP ', ' png ', ' SWF '))) {$imginfo = getimagesize ($file [' Tmp_name ']                ); if (Empty ($imginfo)|| ($ext = = ' gif ' && empty ($imginfo [' bits '])) {$this->error = ' Illegal image file!                    ';                Continue                }/* Save the file and record the file that was successfully saved */if ($this->uploader->save ($file, $this->replace)) {                unset ($file [' Error '], $file [' tmp_name ']);            $info [$key] = $file;            } else {$this->error = $this->uploader->geterror ();        }} if (Isset ($finfo)) {finfo_close ($finfo); } return empty ($info)?    False: $info; }/** * Convert the uploaded file array variable to the correct way * @access private * @param array $files uploaded file variable * @return array * */pri        vate function Dealfiles ($files) {$fileArray = array ();        $n = 0; foreach ($files as $key = + $file) {if (Is_array ($file [' name '])) {$keys = Array_keys ($fi                Le);                $count = count ($file [' name ']); For($i =0; $i < $count; $i + +)                    {$fileArray [$n] [' key '] = $key;                    foreach ($keys as $_key) {$fileArray [$n][$_key] = $file [$_key][$i];                } $n + +;               }}else{$fileArray = $files;            Break    }} return $fileArray; }/** * Set upload driver * @param string $driver drive name * @param array $config Drive configuration */Private function set        Driver ($driver = null, $config = null) {$driver = $driver?: ($this->driver?: C (' File_upload_type ')); $config = $config?        : ($this->driverconfig?: C (' upload_type_config ')); $class = Strpos ($driver, ' \ \ ')?        $driver: ' think\\upload\\driver\\ '. Ucfirst (Strtolower ($driver));        $this->uploader = new $class ($config);        if (! $this->uploader) {E ("There is no upload driver: {$name}"); }}/** * Check the uploaded file * @param array $file file information */private function Check ($file) {/* File upload failed, catch error code */if ($file [' ERROR ']) {$this->error ($file [' ERROR ')            ]);        return false; }/* Invalid upload */if (empty ($file [' name '])) {$this->error = ' Unknown upload error!        '; }/* Check for legal uploads */if (!is_uploaded_file ($file [' tmp_name ')]) {$this->error = ' illegally uploading files!            ';        return false; }/* Check file Size */if (! $this->checksize ($file [' size ']) {$this->error = ' upload file size does not match!            ';        return false; }/* Check file MIME type *///todo:flash the uploaded file gets the MIME type Application/octet-stream if (! $this->checkmime ($fi le[' type ')) {$this->error = ' upload file MIME type not allowed!            ';        return false;            }/* Check the file suffix */if (! $this->checkext ($file [' ext ')]) {$this->error = ' upload file suffix not allowed ';        return false;    }/* Pass Detect */return true; }/** * Get error code information * @param string $Errorno Error number */Private Function error ($ERRORNO) {switch ($errorNo) {Case 1: $th Is->error = ' uploaded file exceeds the value of upload_max_filesize option limit in php.ini!                ';            Break Case 2: $this->error = ' the size of the uploaded file exceeds the value specified in the Max_file_size option in the HTML form!                ';            Break Case 3: $this->error = ' file is only partially uploaded!                ';            Break Case 4: $this->error = ' no files were uploaded!                ';            Break Case 6: $this->error = ' Can't find the Temp folder!                ';            Break Case 7: $this->error = ' File write Failed!                ';            Break Default: $this->error = ' Unknown upload error!        '; }}/** * Check file size is valid * @param integer $size data */Private Function checksize ($size) {return! ($size > $this->maxsize) | |    (0 = = $this->maxsize);  }/** * Check if the uploaded file MIME type is valid * @param string $mime data */  Private Function Checkmime ($mime) {return empty ($this->config[' mimes '))? True:in_array (Strtolower ($mime),    $this->mimes); }/** * Check that the uploaded file suffix is valid * @param string $ext suffix */private function Checkext ($ext) {return empty ($ this->config[' exts ')?    True:in_array (Strtolower ($ext), $this->exts); /** * Save File name * @param string $file file information according to the upload file naming rule */Private function Getsavename ($file) {$ru        Le = $this->savename; if (empty ($rule)) {//Leave file name unchanged/* Resolve pathinfo Chinese file name bug */$filename = substr (PathInfo ("_{$file [' Name ']}            ", Pathinfo_filename), 1);        $savename = $filename;            } else {$savename = $this->getname ($rule, $file [' name ']); if (empty ($savename)) {$this->error = ' file naming rule Error!                ';            return false; }/* File save suffix, support force change file suffix */$ext = empty ($this->config[' Saveext ')? $file [' ext ']: $thisSaveext; Return $savename. '.' .    $ext; /** * Gets the name of the subdirectory * @param array $file uploaded file information */Private Function Getsubpath ($filename) {$SUBPA        th = ";        $rule = $this->subname; if ($this->autosub &&!empty ($rule)) {$subpath = $this->getname ($rule, $filename).            '/'; if (!empty ($subpath) &&! $this->uploader->mkdir ($this->savepath. $subpath)) {$this->err                or = $this->uploader->geterror ();            return false;    }} return $subpath;            /** * Gets the file or directory name according to the specified rule * @param array $rule rule * @param string $filename The original file name * @return string        File or directory name */Private Function GetName ($rule, $filename) {$name = ';            if (Is_array ($rule)) {//array rule $func = $rule [0];            $param = (Array) $rule [1]; foreach ($param as & $value) {$value = Str_replace (' __file__ ', $filename, $value);        } $name = Call_user_func_array ($func, $param);            } elseif (Is_string ($rule)) {//String rule if (function_exists ($rule)) {$name = Call_user_func ($rule);            } else {$name = $rule;    }} return $name; }}