PHP yield first experience, recursively traverse folders and compress

PHP iterates through a folder and compresses it into a zip

PHP code

  Private Function Zip ($path, $zipFile) {$zip =new ziparchive ();    $zip->open ($zipFile, ziparchive::create);//Create an empty zip file $this->addfiletozip ($path, $zip);        } Private Function Addfiletozip ($path, ziparchive $zip, $root = ") {if (!is_dir ($path)) {return false;        } if (! $root) {$root = $path;        } if (Strpos ($path, $root)!==0) {$root = $path; } $handler =opendir ($path);        Opens the current folder specified by $path. while (($filename =readdir ($handler))!==false) {if ($filename! = "." && $filename! = "...") {//Folder file name is '. ' and '. ', do not operate on them if (Is_dir ($path. ") /". $filename)) {//If an object read is a folder, the recursive $this->addfiletozip ($path."                /". $filename, $zip, $root); }else{//Add files to the Zip object $filenameWithPath = $path. "                    /". $filename;                    $localFileName = substr ($filenameWithPath, strlen ($root)); $zip->addfile ($filenameWithPath, $locAlfilename);    }}} @closedir ($handler); }

Refactoring code with yield

PHP code

    Private Function Zipfolder ($folder, $zipFile) {$zip =new ziparchive ();            $zip->open ($zipFile, ziparchive::create);//Create an empty zip file foreach ($this->yieldfile ($folder) as $file) {            $localFileName = substr ($file, strlen ($folder));        $zip->addfile ($file, $localFileName);            }} Private Function Yieldfile ($path) {if (Is_dir ($path)) {$handler = Opendir ($path); while (($filename =readdir ($handler))!==false) {if ($filename! = "." && $filename! = "...") {//Folder file name is '. ' and '. ', do not operate on them if (Is_dir ($path. ") /". $filename)) {//If an object being read is a folder, then the recursive foreach ($this->yieldfile ($path."                        /". $filename) as $file) {yield $file; }}else{//Add the file to the Zip object $file = $path. "                        /". $filename;                    Yield $file; }}} closedir ($handLER); }    }

Code execution

PHP code

  Public Function Anyzip () {for        ($i =0; $i <6; $i + +) {            $start = Microtime (true);            $toPath = ' d:/unzip ';            $this->zipfolder ($toPath, ' d:/zip/123.zip ');            $end = Microtime (true);            Echo ' |zipfolder-delay: '. ($end-$start);            $start = Microtime (true);            $toPath = ' d:/unzip ';            $this->zip ($toPath, ' d:/zip/124.zip ');            $end = Microtime (true);            Echo ' |zip-delay: '. ($end-$start). '
';        }    }

|zipfolder-delay:1.6427090167999|zip-delay:1.6077039241791
|zipfolder-delay:1.6132049560547|zip-delay:1.6287071704865
|zipfolder-delay:1.6342070102692|zip-delay:1.6152048110962
|zipfolder-delay:1.6917150020599|zip-delay:1.6022040843964
|zipfolder-delay:1.6297070980072|zip-delay:1.7262189388275
|zipfolder-delay:1.5997030735016|zip-delay:1.5892019271851

There is little difference between using yield recursion and normal recursive execution time, and the main benefit is to split data acquisition and data processing, easier to understand and reuse

