直接可以拿来用的PHP常用功能代码片段(6~10)
文章来源：jquery教程?-?http://www.jq-school.com/show.aspx?id=324
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前面已经分享了PHP常用功能代码片段(1~5)，今天是第二篇，也就是第六到十这5个实现代码片段，希望可以帮到jquery学堂群里面的成员和广大对PHP开发的网友们提高开发效率，以下是第二篇文章。
6、PHP实现zip压缩解压通用函数
function ezip($zip, $hedef = ''){ $dirname=preg_replace('/.zip/', '', $zip); $root = $_SERVER['DOCUMENT_ROOT'].'/zip/'; // echo $root. $zip; $zip = zip_open($root . $zip); // var_dump($zip); @mkdir($root . $hedef . $dirname.'/'.$zip_dosya); while($zip_icerik = zip_read($zip)){ $zip_dosya = zip_entry_name($zip_icerik); if(strpos($zip_dosya, '.')){ $hedef_yol = $root . $hedef . $dirname.'/'.$zip_dosya; @touch($hedef_yol); // echo $hedef_yol; $yeni_dosya = @fopen($hedef_yol, 'w+'); @fwrite($yeni_dosya, zip_entry_read($zip_icerik)); @fclose($yeni_dosya); // $yeni_dosya; }else{ @mkdir($root . $hedef . $dirname.'/'.$zip_dosya); // echo $root . $hedef . 'x/'.$zip_dosya; }; };}// ezip('yuol.zip','./tr/');function zip($path) { $path=preg_replace('/\/$/', '', $path); preg_match('/\/([\d\D][^\/]*)$/', $path, $matches, PREG_OFFSET_CAPTURE); $filename=$matches[1][0].".zip"; // var_dump($filename); // set_time_limit(0); $zip = new ZipArchive(); $zip->open($filename,ZIPARCHIVE::OVERWRITE);//return ; // var_dump($path); if (is_file($path)) { $path=preg_replace('/\/\//', '/', $path); $base_dir=preg_replace('/\/[\d\D][^\/]*$/', '/', $path); $base_dir=addcslashes($base_dir, '/:'); $localname=preg_replace('/'.$base_dir.'/', '', $path); // var_dump($localname); $zip->addFile($path,$localname); // var_dump($path); $zip->close(); return; }elseif (is_dir($path)) { $path=preg_replace('/\/[\d\D][^\/]*$/', '', $path); $base_dir=$path.'/';//基目录 $base_dir=addcslashes($base_dir, '/:'); // var_dump($base_dir); } $path=preg_replace('/\/\//', '/', $path); // var_dump($path); function addItem($path,&$zip,&$base_dir){ // var_dump($path); $handle = opendir($path); // var_dump($path); while (false !== ($file = readdir($handle))) { if (($file!='.')&&($file!='..')){ // var_dump($file); $ipath=$path.'/'.$file; if (is_file($ipath)){//条目是文件 $localname=preg_replace('/'.$base_dir.'/', '', $ipath); var_dump($localname); $zip->addFile($ipath,$localname); // var_dump($r); } else if (is_dir($ipath)){ addItem($ipath,$zip,$base_dir); $localname=preg_replace('/'.$base_dir.'/', '', $ipath); var_dump($localname); $zip->addEmptyDir($localname); } // var_dump($path); } } } // var_dump($base_dir); addItem($path,$zip,$base_dir); $zip->close();}//调用方法zip('解压的目录');
7、php实用获取远程图片的通用方法
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function auto_save_image($body){ $img_array = explode('&',$body); /*$img_array = array(); preg_match_all("/(src)=[\"|\'| ]{0,}(http:\/\/(.*)\.(gif|jpg|jpeg|bmp|png))[\"|\'| ]{0,}/isU", $body, $img_array); $img_array = array_unique($img_array[2]);*/ //也可以自动匹配 set_time_limit(0); $imgPath = "uploads/allimg/".date("Ymd")."/"; $milliSecond = strftime("%H%M%S",time()); if(!is_dir($imgPath)) @mkdir($imgPath,0777); foreach($img_array as $key =>$value) { $value = trim($value); $get_file = @file_get_contents($value); $rndFileName = $imgPath."/".$milliSecond.$key.".".substr($value,-3,3); if($get_file) { $fp = @fopen($rndFileName,"w"); @fwrite($fp,$get_file); @fclose($fp); } $body = @ereg_replace($value, $rndFileName, $body); } return $body;}
8、PHP实现简单的文件下载通用方法
function download_file($file){ if(is_file($file)){ $length = filesize($file); $type = mime_content_type($file); $showname = ltrim(strrchr($file,'/'),'/'); header("Content-Description: File Transfer"); header('Content-type: ' . $type); header('Content-Length:' . $length); if (preg_match('/MSIE/', $_SERVER['HTTP_USER_AGENT'])) { //for IE header('Content-Disposition: attachment; filename="' . rawurlencode($showname) . '"'); } else { header('Content-Disposition: attachment; filename="' . $showname . '"'); } readfile($file); exit; } else { exit('文件已被删除！'); }}
9、PHP实现导出Excel文件通用方法
/** * 导出数据为excel表格 [email protected] $data 一个二维数组,结构如同从数据库查出来的数组 [email protected] $title excel的第一行标题,一个数组,如果为空则没有标题 [email protected] $filename 下载的文件名 [email protected] $stu = M ('User'); $arr = $stu -> select(); exportexcel($arr,array('id','账户','密码','昵称'),'文件名!');*/function exportexcel($data=array(),$title=array(),$filename='report'){ header("Content-type:application/octet-stream"); header("Accept-Ranges:bytes"); header("Content-type:application/vnd.ms-excel"); header("Content-Disposition:attachment;filename=".$filename.".xls"); header("Pragma: no-cache"); header("Expires: 0"); //导出xls 开始 if (!empty($title)){ foreach ($title as $k => $v) { $title[$k]=iconv("UTF-8", "GB2312",$v); } $title= implode("\t", $title); echo "$title\n"; } if (!empty($data)){ foreach($data as $key=>$val){ foreach ($val as $ck => $cv) { $data[$key][$ck]=iconv("UTF-8", "GB2312", $cv); } $data[$key]=implode("\t", $data[$key]); } echo implode("\n",$data); }}
10、PHP实现如何清除TP的文件缓存
public function cache_clear() { $this->deldir(TEMP_PATH);}function deldir($dir) { $dh = opendir($dir); while ($file = readdir($dh)) { if ($file != "." && $file != "..") { $fullpath = $dir . "/" . $file; if (!is_dir($fullpath)) { unlink($fullpath); } else { deldir($fullpath); } } }}?
