PHP, Database and XML/JSON

<?php

class phptextClass

{

public function phptext($text,$textColor,$backgroundColor='',$fontSize,$imgWidth,$imgHeight,$dir,$fileName)

{

$font = './calibri.ttf';/*define font*/

$textColor=$this->hexToRGB($textColor);

$im = imagecreatetruecolor($imgWidth, $imgHeight);

$textColor = imagecolorallocate($im, $textColor['r'],$textColor['g'],$textColor['b']);

if($backgroundColor==''){/*select random color*/

$colorCode=array('#56aad8', '#61c4a8', '#d3ab92');

$backgroundColor = $this->hexToRGB($colorCode[rand(0, count($colorCode)-1)]);

$backgroundColor = imagecolorallocate($im, $backgroundColor['r'],$backgroundColor['g'],$backgroundColor['b']);

}else{/*select background color as provided*/

$backgroundColor = $this->hexToRGB($backgroundColor);

$backgroundColor = imagecolorallocate($im, $backgroundColor['r'],$backgroundColor['g'],$backgroundColor['b']);

}

imagefill($im,0,0,$backgroundColor);

list($x, $y) = $this->ImageTTFCenter($im, $text, $font, $fontSize);

imagettftext($im, $fontSize, 0, $x, $y, $textColor, $font, $text);

if(imagejpeg($im,$dir.$fileName,90)){/*save image as JPG*/

return json_encode(array('status'=>TRUE,'image'=>$dir.$fileName));

imagedestroy($im);

}

}

public function phpcaptcha($textColor,$backgroundColor='#59008d',$imgWidth,$imgHeight,$noiceLines=0,$noiceDots=0,$noiceColor='#162453')

{

/* Settings */

$text=$this->random();

$font = 'static/font/monofont.ttf';/* font */

$textColor=$this->hexToRGB($textColor);

$fontSize = $imgHeight * 0.75;

$im = imagecreatetruecolor($imgWidth, $imgHeight);

$textColor = imagecolorallocate($im, $textColor['r'],$textColor['g'],$textColor['b']);

$backgroundColor = $this->hexToRGB($backgroundColor);

$backgroundColor = imagecolorallocate($im, $backgroundColor['r'],$backgroundColor['g'],$backgroundColor['b']);

/* generating lines randomly in background of image */

if($noiceLines>0){

$noiceColor=$this->hexToRGB($noiceColor);

$noiceColor = imagecolorallocate($im, $noiceColor['r'],$noiceColor['g'],$noiceColor['b']);

for( $i=0; $i<$noiceLines; $i++ ) {

imageline($im, mt_rand(0,$imgWidth), mt_rand(0,$imgHeight),

mt_rand(0,$imgWidth), mt_rand(0,$imgHeight), $noiceColor);

}}

if($noiceDots>0){/* generating the dots randomly in background */

for( $i=0; $i<$noiceDots; $i++ ) {

imagefilledellipse($im, mt_rand(0,$imgWidth),

mt_rand(0,$imgHeight), 3, 3, $textColor);

}}

imagefill($im,0,0,$backgroundColor);

list($x, $y) = $this->ImageTTFCenter($im, $text, $font, $fontSize);

imagettftext($im, $fontSize, 0, $x, $y, $textColor, $font, $text);

imagejpeg($im,NULL,90);/* Showing image */

header('Content-Type: image/jpeg');/* defining the image type to be shown in browser widow */

imagedestroy($im);/* Destroying image instance */

if(isset($_SESSION)){

$_SESSION['captcha_code'] = $text;/* set random text in session for captcha validation*/

}

}

/*for random string*/

protected function random($characters=6,$letters = '23456789bcdfghjkmnpqrstvwxyz'){

$str='';

for ($i=0; $i<$characters; $i++) {

$str .= substr($letters, mt_rand(0, strlen($letters)-1), 1);

}

return $str;

}

/*function to convert hex value to rgb array*/

protected function hexToRGB($colour)

{

if ( $colour[0] == '#' ) {

$colour = substr( $colour, 1 );

}

if ( strlen( $colour ) == 6 ) {

list( $r, $g, $b ) = array( $colour[0] . $colour[1], $colour[2] . $colour[3], $colour[4] . $colour[5] );

} elseif ( strlen( $colour ) == 3 ) {

list( $r, $g, $b ) = array( $colour[0] . $colour[0], $colour[1] . $colour[1], $colour[2] . $colour[2] );

} else {

return false;

}

$r = hexdec( $r );

$g = hexdec( $g );

$b = hexdec( $b );

return array( 'r' => $r, 'g' => $g, 'b' => $b );

}

/*function to get center position on image*/

protected function ImageTTFCenter($image, $text, $font, $size, $angle = 8)

{

$xi = imagesx($image);

$yi = imagesy($image);

$box = imagettfbbox($size, $angle, $font, $text);

$xr = abs(max($box[2], $box[4]));

$yr = abs(max($box[5], $box[7]));

$x = intval(($xi - $xr) / 2);

$y = intval(($yi + $yr) / 2);

return array($x, $y);

}

}

?>