HTML code for an image

Monday, October 10, 2011

Embedded HTML Code for an Image is an advanced technique for Modern Web. Standard HTML Images are map with <IMG> tag using src attribute src attribute is to be an URL of an Image.

Traditional Image Tag Example:
<img src="pathof-image.jpg" />

HTML code for an image
In Modern Image tag  Image Soruce Placed It self with in the SRC using Image Tag Data URI Scheme

Click Here to View how to create  Image Tag Data URI Scheme

Following PHP Function we can build the HTML Code for an Image.


<?php
// Funtion to prepare Data URI:
// @ parm: Image filepath, Image Size
// reutn : data_uri string
function thumbnail_data_uri($filename,$width=0,$height=0) 
{
 
 // Get Image Header Type
      $image_info = getimagesize($filename);
      $image_type = $image_info[2];

 // Check the Size is Specified
 if($width!=0 and $height!=0)
 {
      if( $image_type == IMAGETYPE_JPEG ) {
         $image = imagecreatefromjpeg($filename);
      } elseif( $image_type == IMAGETYPE_GIF ) {
         $image = imagecreatefromgif($filename);
      } elseif( $image_type == IMAGETYPE_PNG ) {
         $image = imagecreatefrompng($filename);
   imagealphablending($image, true);

      } 

 $new_image = imagecreatetruecolor($width, $height);
 imagealphablending($new_image, false);
 imagesavealpha($new_image, true);     
      imagecopyresampled($new_image, $image, 0, 0, 0, 0, $width, $height, imagesx($image),imagesy($image));
      $image = $new_image; 
   
 ob_start();
      if( $image_type == IMAGETYPE_JPEG ) {
         imagejpeg($image);
      } elseif( $image_type == IMAGETYPE_GIF ) {
         imagegif($image);         
      } elseif( $image_type == IMAGETYPE_PNG ) {
         imagepng($image);
      } 
 $content=ob_get_clean();   
   
   
 }else
 $content=file_get_contents($filename,true);
 
 
 
 $base64 = base64_encode($content); 
 return "data:$image_type;base64,$base64";
}

?>

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