PHP Indonesia: 2015

Tuesday, July 21, 2015

Disable Copy Paste dengan Javascript

Disable copy paste dan cut di website:

 <body oncopy="return false" oncut="return false" onpaste="return false">

Disable Klik Kanan dengan Javascript

Berikut adalah kode javascript untuk menonaktifkan klik kanan di web

tempatkan script ini dimana saja asal jangan di dalam tag php

 <script language="javascript">  
 document.onmousedown=disableclick;  
 status="Right Click Disabled";  
 Function disableclick(event)  
 {  
  if(event.button==2)  
   {  
    alert(status);  
    return false;    
   }  
 }  
 </script>

kemudian cari tag body dan ganti dengan yang ini:

 <body oncontextmenu="return false"></body>

Thursday, April 23, 2015

Membuat Web Responsive Dengan Virtual Port

Membuat website responsive tidak sulit. menggunakan virtual port pada meta tag website seketika menjadi responsive. mudah bukan?

Property	Description
width	The width of the virtual viewport of the device.
device-width	The physical width of the device's screen.
height	The height of the "virtual viewport" of the device.
device-height	The physical height of the device's screen.
initial-scale	The initial zoom when visiting the page. 1.0 does not zoom.
minimum-scale	The minimum amount the visitor can zoom on the page. 1.0 does not zoom.
maximum-scale	The maximum amount the visitor can zoom on the page. 1.0 does not zoom.
user-scalable	Allows the device to zoom in and out. Values are yes or no.

Mengatur File Size Upload File di PHP

function untuk mengatur besar file yang di perbolehkan di upload dengan PHP
contoh

 <?php  
 function display_filesize($filesize){  
   if(is_numeric($filesize)){  
   $decr = 1024; $step = 0;  
   $prefix = array('Byte','KB','MB','GB','TB','PB');  
   while(($filesize / $decr) > 0.9){  
     $filesize = $filesize / $decr;  
     $step++;  
   }   
   return round($filesize,2).' '.$prefix[$step];  
   } else {  
   return 'NaN';  
   }  
 }  
 ?>

Upload Multiple Files Menggunakan PHP Function

function upload multiple file menggunakan PHP

contoh:

 <?php  
 header('Content-Type: text/plain; charset=utf-8');  
 try {  
   // Undefined | Multiple Files | $_FILES Corruption Attack  
   // If this request falls under any of them, treat it invalid.  
   if (  
     !isset($_FILES['upfile']['error']) ||  
     is_array($_FILES['upfile']['error'])  
   ) {  
     throw new RuntimeException('Invalid parameters.');  
   }  
   // Check $_FILES['upfile']['error'] value.  
   switch ($_FILES['upfile']['error']) {  
     case UPLOAD_ERR_OK:  
       break;  
     case UPLOAD_ERR_NO_FILE:  
       throw new RuntimeException('No file sent.');  
     case UPLOAD_ERR_INI_SIZE:  
     case UPLOAD_ERR_FORM_SIZE:  
       throw new RuntimeException('Exceeded filesize limit.');  
     default:  
       throw new RuntimeException('Unknown errors.');  
   }  
   // You should also check filesize here.   
   if ($_FILES['upfile']['size'] > 1000000) {  
     throw new RuntimeException('Exceeded filesize limit.');  
   }  
   // DO NOT TRUST $_FILES['upfile']['mime'] VALUE !!  
   // Check MIME Type by yourself.  
   $finfo = new finfo(FILEINFO_MIME_TYPE);  
   if (false === $ext = array_search(  
     $finfo->file($_FILES['upfile']['tmp_name']),  
     array(  
       'jpg' => 'image/jpeg',  
       'png' => 'image/png',  
       'gif' => 'image/gif',  
     ),  
     true  
   )) {  
     throw new RuntimeException('Invalid file format.');  
   }  
   // You should name it uniquely.  
   // DO NOT USE $_FILES['upfile']['name'] WITHOUT ANY VALIDATION !!  
   // On this example, obtain safe unique name from its binary data.  
   if (!move_uploaded_file(  
     $_FILES['upfile']['tmp_name'],  
     sprintf('./uploads/%s.%s',  
       sha1_file($_FILES['upfile']['tmp_name']),  
       $ext  
     )  
   )) {  
     throw new RuntimeException('Failed to move uploaded file.');  
   }  
   echo 'File is uploaded successfully.';  
 } catch (RuntimeException $e) {  
   echo $e->getMessage();  
 }  
 ?>

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