求助:哪错了?就是找不到~~~~~~~~
<?php
session_start();
$image = imagecreatetruecolor(200,60);
$bgcolor = imagecolorallocate($image,255,255,255);
imagefill($image,0,0,$bgcolor);
/*for($i=0;$i<4;$i++){
$fontsize = 6;
$fontcolor = imagecolorallocate($image,rand(0,120),rand(0,120),rand(0,120));
$fontcontent = rand(0,9);
$x = ($i*100/4)+rand(5,10);
$y = rand(5,10);
imagestring($image,$fontsize,$x,$y,$fontcontent,$fontcolor);
}*/
$fontface = 'FZYTK.TTF';
$str = "速度发动机换方关键时刻";
$strdb =str_split($str,3);
$captch_code ='';
for( $i=0 ; $i<4; $i++ ){
$fontcolor = imagecolorallocate( $image ,rand(0,120),rand(0,120),rand(0,120));
$index = rand(0,count($strdb)-1);
$cn = $strdb[ $index ];
$captch_code=$cn;
imagettftext($image,mt_rand(20,24),mt_rand(-60,60),(40*$i+20),mt_rand(30,35),$fontcolor,$fontface,$cn);
}
$_SESSION[' $authcode ']=$captch_code;
for($i=0;$i<200;$i++){
$pointcolor = imagecolorallocate( $image ,rand(50,200),rand(50,200),rand(50,200));
imagesetpixel($image,rand(1,199),rand(1,59),$pointcolor);
}
for($i=0;$i<3;$i++){
$linecolor = imagecolorallocate($image,rand(80,220),rand(80,220),rand(80,220));
imageline($image,rand(1,199),rand(1,59),rand(1,199),rand(1,59),$linecolor);
}
header('content-type: image/png');
imagepng($image);
//end
imagedestroy($image);