我有这部分脚本。在这个脚本之前，我有一个返回页面内容的 curl 函数。使用 preg_match，我得到了这些值。问题出在 imagecreate 脚本或与之相关的东西上。
这是脚本：
<?php
ob_start();
$user = "username";
$pw = "pass";
$ne_ki = 1;
$postfields = "name=".$id."&pass=".$pw."&ne_ki=".$ne_ki;
$ch = curl_init();
curl_setopt($ch, CURLOPT_HEADER, 0); // Get the header
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_URL, "http://domain.tld/login.php");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postfields);
curl_setopt($ch, CURLOPT_COOKIEFILE, 'C:\AppServ\www\curl\cookies.txt');
curl_setopt($ch, CURLOPT_URL, 'http://domain.tld/profile.php?id='.$_GET['id']);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
$data2 = curl_exec($ch);
curl_close($ch);
preg_match_all ("/<div class=\"profil_jobb_masodik2\">([^`]*?)<\/div>/", $data2,$matches);
preg_match_all ("/<div class=\"lista_mini_fej\">([^`]*?)<\/div>/", $data2, $matches2);
preg_match_all ("/<nobr>([^`]*?)<\/nobr>/", $data2, $matches3);
$string = preg_match("/\([0-9]+\)/", $matches2[0][0], $strend);
$HTML = '';
$HTML .= "DATA1: ".$matches3[0][0]."<br />";
$HTML .= "DATA2: ".$matches[1][0]."<br />";
$HTML .= "DATA3: ".$matches[1][1]."<br />";
$HTML .= "DATA4: ".$matches[1][2]."<br />";
$HTML .= "DATA5: ".$matches[1][3]."<br />";
$HTML .= "DATA6: ".$matches[1][4]."<br />";
$HTML .= "DATA7: ".$matches[1][5]."<br />";
$HTML .= "DATA8: ".$matches[1][6]."<br />";
$HTML .= "DATA9: ".$matches[1][7]."<br />";
if (!empty($strend[0]))
$HTML .= "DATA10: ".$strend[0]."<br />";
$text = $HTML;
if(empty($text))
fatal_error('Error: Text not properly formatted.') ;
// customizable variables
$font_file = 'ambient.ttf';
$font_size = 23 ; // font size in pts
$font_color = '#ffffff' ;
$image_file = 'bb.jpeg';
// x and y for the bottom right of the text
// so it expands like right aligned text
$x_finalpos = 227;
$y_finalpos = 103;
// trust me for now...in PNG out PNG
$mime_type = 'image/png' ;
$extension = '.png' ;
$s_end_buffer_size = 4096 ;
// check for GD support
if(!function_exists('ImageCreate'))
fatal_error('Error: Server does not support PHP image generation') ;
// check font availability;
if(!is_readable($font_file)) {
fatal_error('Error: The server is missing the specified font.') ;
}
// create and measure the text
$font_rgb = hex_to_rgb($font_color) ;
$box = @ImageTTFBBox($font_size,0,$font_file,$text) ;
$text_width = abs($box[2]-$box[0]);
$text_height = abs($box[5]-$box[3]);
$image = imagecreatefrompng($image_file);
if(!$image || !$box)
{
fatal_error('Error: The server could not create this image.') ;
}
// allocate colors and measure final text position
$font_color = ImageColorAllocate($image,$font_rgb['red'],$font_rgb['green'],$font_rgb['blue']) ;
$image_width = imagesx($image);
$put_text_x = $image_width - $text_width - ($image_width - $x_finalpos);
$put_text_y = $y_finalpos;
// Write the text
imagettftext($image, $font_size, 0, $put_text_x, $put_text_y, $font_color, $font_file, $text);
header('Content-type: ' . $mime_type) ;
ImagePNG($image) ;
ImageDestroy($image) ;
exit ;
/*
attempt to create an image containing the error message given.
if this works, the image is sent to the browser. if not, an error
is logged, and passed back to the browser as a 500 code instead.
*/
function fatal_error($message)
{
// send an image
if(function_exists('ImageCreate'))
{
$width = ImageFontWidth(5) * strlen($message) + 10 ;
$height = ImageFontHeight(5) + 10 ;
if($image = ImageCreate($width,$height))
{
$background = ImageColorAllocate($image,255,255,255) ;
$text_color = ImageColorAllocate($image,0,0,0) ;
ImageString($image,5,5,5,$message,$text_color) ;
header('Content-type: image/png') ;
ImagePNG($image) ;
ImageDestroy($image) ;
// This is line 197
exit ;
}
}
}
/*
decode an HTML hex-code into an array of R,G, and B values.
accepts these formats: (case insensitive) #ffffff, ffffff, #fff, fff
*/
function hex_to_rgb($hex) {
// remove '#'
if(substr($hex,0,1) == '#')
$hex = substr($hex,1) ;
// expand short form ('fff') color to long form ('ffffff')
if(strlen($hex) == 3) {
$hex = substr($hex,0,1) . substr($hex,0,1) .
substr($hex,1,1) . substr($hex,1,1) .
substr($hex,2,1) . substr($hex,2,1) ;
}
if(strlen($hex) != 6)
fatal_error('Error: Invalid color "'.$hex.'"') ;
// convert from hexidecimal number systems
$rgb['red'] = hexdec(substr($hex,0,2)) ;
$rgb['green'] = hexdec(substr($hex,2,2)) ;
$rgb['blue'] = hexdec(substr($hex,4,2)) ;
return $rgb ;
}
?>
第 197 行标有注释。错误是：
警告：无法修改标头信息 - 标头已由第 197 行 C:\AppServ\www\curl\index.php 中的（输出开始于 C:\AppServ\www\curl\index.php:1）发送
问题是什么？