Sugestões e comentários

$this->numChars)) $this->numChars = $num; # gerar string randmica $this->texto = $this->gerString(); $_SESSION['vImageCodS'] = $this->texto; } function loadCodes(){ $this->postCode = $_POST['vImageCodP']; $this->sessionCode = $_SESSION['vImageCodS']; } function checkCode(){ if (isset($this->postCode)) $this->loadCodes(); if ($this->postCode == $this->sessionCode) return true; else return false; } function showCodBox($mode=0,$extra=''){ $str = " "; if ($mode) echo $str; else return $str; } function showImage(){ $this->gerImage(); header("Content-type: image/png"); ImagePng($this->im); } function gerImage(){ # Calcular tamanho para caber texto $this->w = ($this->numChars*$this->charx) + 40; #5px de cada lado, 4px por char # Criar img $this->im = imagecreatetruecolor($this->w, $this->h); #desenhar borda e fundo imagefill($this->im, 0, 0, $this->getColor($this->colBorder)); imagefilledrectangle ( $this->im, 1, 1, ($this->w-2), ($this->h-2), $this->getColor($this->colBG) ); #desenhar circulos for ($i=1;$i<=$this->numCirculos;$i++) { $randomcolor = imagecolorallocate ($this->im , rand(100,255), rand(100,255),rand(100,255)); imageellipse($this->im,rand(0,$this->w-10),rand(0,$this->h-3), rand(20,60),rand(20,60),$randomcolor); } #escrever texto $ident = 20; for ($i=0;$i<$this->numChars;$i++){ $char = substr($this->texto, $i, 1); $font = rand(4,5); $y = round(($this->h-15)/2); $col = $this->getColor($this->colTxt); if (($i%2) == 0){ imagechar ( $this->im, $font, $ident, $y, $char, $col ); }else{ imagecharup ( $this->im, $font, $ident, $y+10, $char, $col ); } $ident = $ident+$this->charx; } } function getColor($var){ $rgb = explode(" ",$var); $col = imagecolorallocate ($this->im, $rgb[0], $rgb[1], $rgb[2]); return $col; } function gerString(){ rand(0,time()); $possible="AGHacefhjkrStVxY124579"; while(strlen($str)<$this->numChars) { $str.=substr($possible,(rand()%(strlen($possible))),1); } $txt = $str; return $txt; } } #dooms@terra.com.br# ?>