<?php
$width?=?300;
$height?=?100;
$image?=imagecreatetruecolor($width,$height);?//創建畫布

$white?=?imagecolorallocate($image,255,255,255);//畫布背景色

imagefilledrectangle($image,0,0,$width,$height,$white);?//填充畫布背景色


for($i=0;$i<4;$i++){
????$fontsize?=?mt_rand(30,40);
????$fontcolor=imagecolorallocate($image,rand(0,?120),rand(0,?120),rand(0,?120));
????//驗證碼顏色，放在循環里，每個字符顏色不同
????$data?=?"abcdefghijklmnpqrstuvwyz123456789";
????$fontcontent?=?substr($data,rand(0,?strlen($data)-1),?1);

????$x=($i*300/4)+rand(30,?50);

????$y=rand(40,?70);

????$angle?=?mt_rand(-15,15);

????imagettftext($image,$fontsize,$angle,$x,$y,$fontcolor,'msyh.ttc',$fontcontent);
}
header("content-type:image/jpeg;charset=utf-8");

ob_clean();?//這個就很怪，有時候不加就報錯

imagejpeg($image);

imagedestroy($image);


?>

歡迎采納