PHP generates verification code picture study notes_PHP tutorial

Here are the study notes generated by the verification code graphics when I was studying. Later, after my own in-depth study, I can get the remote pictures to the local, but here I need to open the php gd library.

The code is as follows

代码如下

复制代码

header("Content-type:image/png"); set_time_limit(0);//设置PHP超时时间 $url = $_GET['url']; $url = "http://vcer.baidu.com/verify"; $imginfo = GetImageSize ( $url );   $imgw = $imginfo [0];   $imgh = $imginfo [1]; $bg = imagecreatetruecolor($imgw,$imgh); $image = imagecreatefromjpeg($url); imagecolorallocate($image,255,255,255); imagecopy($bg,$image,0,0, 0,0,$imgw,$imgh); imagedestroy($image); ImagePng($bg);

Copy code

代码如下

复制代码

header("Content-type:image/png"); set_time_limit(0);//设置PHP超时时间 $url = $_GET['url']; $url = "http://vcer.baidu.com/verify"; if(empty($url)){  echo "没有图片";  die; } $imginfo = GetImageSize ( $url );   $type = exif_imagetype($url); $imgw = $imginfo [0];   $imgh = $imginfo [1]; $bg = imagecreatetruecolor($imgw,$imgh); if($type==IMAGETYPE_GIF){  $image = imagecreatefromgif($url); }elseif($type==IMAGETYPE_JPEG){  $image = imagecreatefromjpeg($url); }elseif($type==IMAGETYPE_PNG){  $image = imagecreatefrompng($url); }   imagecolorallocate($image,255,255,255); imagecopy($bg,$image,0,0, 0,0,$imgw,$imgh); imagedestroy($image); ImagePng($bg);

header("Content-type:image/png");
set_time_limit(0);//Set PHP timeout
$url = $_GET['url'];
$url = "http://vcer.baidu.com/verify";
$imginfo = GetImageSize ( $url );
$imgw = $imginfo [0];
$imgh = $imginfo [1];
$bg = imagecreatetruecolor($imgw,$imgh);
$image = imagecreatefromjpeg($url);
imagecolorallocate($image,255,255,255);
imagecopy($bg,$image,0,0, 0,0,$imgw,$imgh);
imagedestroy($image);
ImagePng($bg);

Get the remote verification code locally

The code is as follows

Copy code

header("Content-type:image/png"); set_time_limit(0);//Set PHP timeout $url = $_GET['url']; $url = "http://vcer.baidu.com/verify"; if(empty($url)){ echo "No picture"; die; } $imginfo = GetImageSize ( $url ); $type = exif_imagetype($url); $imgw = $imginfo [0]; $imgh = $imginfo [1]; $bg = imagecreatetruecolor($imgw,$imgh); if($type==IMAGETYPE_GIF){ $image = imagecreatefromgif($url); }elseif($type==IMAGETYPE_JPEG){ $image = imagecreatefromjpeg($url); }elseif($type==IMAGETYPE_PNG){ $image = imagecreatefrompng($url); } imagecolorallocate($image,255,255,255); imagecopy($bg,$image,0,0, 0,0,$imgw,$imgh); imagedestroy($image); ImagePng($bg); http://www.bkjia.com/PHPjc/632966.html www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632966.htmlTechArticleHere are the study notes generated by the verification code graphics during my study. Later, after my own in-depth study, I can obtain Remote pictures are sent to the local one, but the php gd library needs to be enabled here. ...