img.php

<?php

class TextOnImage
{

    public $jpegQuality = 100;

    public $ttfFontDir   = 'fonts';

    private $ttfFont    = false;
    private $ttfFontSize  = false;

    private $hImage      = false;
    private $hColor      = false;

    public function __construct($imagePath)
    {
        if (!is_file($imagePath) || !list(,,$type) = @getimagesize($imagePath)) return false;

        switch ($type)
        {
            case 1:  $this->hImage = @imagecreatefromgif($imagePath);  break;
            case 2:  $this->hImage = @imagecreatefromjpeg($imagePath);  break;
            case 3:  $this->hImage = @imagecreatefrompng($imagePath);  break;
            default: $this->hImage = false;
        }
    }

    public function __destruct()
    {
        if ($this->hImage) imagedestroy($this->hImage);
    }

    public function putImage($imagePath,$x,$y)
    {

        if (!is_file($imagePath) || !list(,,$type) = @getimagesize($imagePath)) return false;

        switch ($type)
        {
            case 1:  $image = @imagecreatefromgif($imagePath);$params=getimagesize($imagePath);  break;
            case 2:  $image = @imagecreatefromjpeg($imagePath);$params=getimagesize($imagePath);  break;
            case 3:  $image = @imagecreatefrompng($imagePath);$params=getimagesize($imagePath);  break;
            default: $image = false;
        }
        if ($image)
            imagecopy($this->hImage,$image,$x,$y,0,0,$params[0],$params[1]);
    }

    public function setFont($font, $size = 14, $color = false, $alpha = false)
    {
        if (!is_file($font) && !is_file($font = $this->ttfFontDir.'/'.$font))
            return false;

        $this->ttfFont     = $font;
        $this->ttfFontSize   = $size;

        if ($color) $this->setColor($color, $alpha);
    }

    public function writeText ($x, $y, $text, $angle = 0)
    {
        if (!$this->ttfFont || !$this->hImage || !$this->hColor) return false;

        imagettftext(
            $this->hImage,
            $this->ttfFontSize, $angle, $x, $y + $this->ttfFontSize,
            $this->hColor, $this->ttfFont, $text);
    }

    public function textFormat($bWidth, $bHeight, $text)
    {

        $strings   = explode("\n",
            preg_replace('!([^\s]{24})[^\s]!su', '\\1 ',
                str_replace(array("\r", "\t"),array("\n", ' '), $text)));

        $textOut   = array(0 => '');
        $i = 0;

        foreach ($strings as $str)
        {

            $words = array_filter(explode(' ', $str));

            foreach ($words as $word)
            {

                $sizes = imagettfbbox($this->ttfFontSize, 0, $this->ttfFont, $textOut[$i].$word.' ');

                if ($sizes[2] > $bWidth) $textOut[++$i] = $word.' '; else $textOut[$i].= $word.' ';

                if ($i*$this->ttfFontSize >= $bHeight) break(2);
            }

            $textOut[++$i] = ''; if ($i*$this->ttfFontSize >= $bHeight) break;
        }

        return implode ("\n", $textOut);
    }

    public function setColor($color, $alpha = false)
    {
        if (!$this->hImage) return false;

        list($r, $g, $b) = array_map('hexdec', str_split(ltrim($color, '#'), 2));

        return $alpha === false ?
            $this->hColor = imagecolorallocate($this->hImage, $r+1, $g+1, $b+1) :
            $this->hColor = imagecolorallocatealpha($this->hImage, $r+1, $g+1, $b+1, $alpha);
    }



    public function output ($target, $replace = true)
    {
        if (is_file ($target) && !$replace) return false;

        $ext = strtolower(substr($target, strrpos($target, ".") + 1));

        switch ($ext)
        {
            case "gif":
                imagegif ($this->hImage, $target);
                break;

            case "jpg" :
            case "jpeg":
                imagejpeg($this->hImage, $target, $this->jpegQuality);
                break;

            case "png":
                imagepng($this->hImage, $target);
                break;

            default: return false;
        }
        return true;
    }
}