counter.php

<?php
        // counter.php the program to show the counter number.
        
        function CounterImage() {
           $counterLogFile = ".counter.log";
           
           if (file_exists($counterLogFile) == true) {
              if(($fp= fopen($counterLogFile, "r+")) == false) {
                 printf("fopen of the file %s failed\n", $counterLogFile);
                 exit;
              }
              if (($content = fread($fp, filesize($counterLogFile))) == false) {
                 printf(" fread failed on the file %s\n", $counterLogFile);
                 exit;
              } else {
                 $content=chop($content); //trim the return character
                 if (($imageLocation = convertToImage($content)) == false) {
                    printf("ConverttoImage failed\n");
                    exit;
                 } else {
                    $content++;
                    if (rewind($fp) == 0) {
                       printf("rewind failed\n");
                       exit;
                    }
                    if (!fwrite($fp, $content, strlen($content))) {
                       printf("fwrite failed while updateing count in the file %s\n", $counterLogFile);
                       exit;
                    }
                    return $imageLocation;
                 }
              }
           }else {
              if (($fp = fopen($counterLogFile, "w")) ==false) {
                 printf("fopen of the file %s failed\n", $counterLogFile);
                 exit;
              }
              if (!fwrite($fp, "1", 1)) {
                 printf("fwrite failed on the file %s\n", $counterLogFile);
                 exit;
              }
           }
        }


        function ConvertToImage($content) {
           
           $imageFile = ".counter.png";
           $relativePath = ".counter.png";
           $noOfChars = strlen($content);
           
           $charHeight = ImageFontHeight(5);
           $charWidth = ImageFontWidth(5);
           $strWidth = $charWidth * $noOfChars;
           $strHeight = $charHeight;
           
           //15 padding
           $imgWidth = $strWidth + 15;
           $imgHeight = $strHeight + 15;
           $imgCenterX = $imgWidth /2;
           $imgCenterY = $imgHeight /2;
           
           $im = ImageCreate($imgWidth, $imgHeight);
           $script = ImageColorAllocate($im, 0, 255, 0);
           $outercolor = ImageColorAllocate($im, 99, 140, 214);
           $innercolor = ImageColorAllocate($im, 0, 0, 0);
           ImageFilledRectangle($im, 0, 0, $imgWidth, $imgHeight, $outercolor);
           ImageFilledRectangle($im, 3, 3, $imgWidth -4, $imgHeight-4, $innercolor);
           
           //draw string
           $drawPosX = $imgCenterX - ($strWidth /2) +1;
           $drawPosY = $imgCenterY - ($strHeight /2);
           ImageString($im, 5, $drawPosX, $drawPosY, $content, $script);
           
           //save image and return
           ImagePNG($im, $imageFile);
           return $relativePath;
        }
?>    

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