我想做http://www.appline.ro/pasti Thx之类的帮助
刷新时我想要显示另一个图像，随机图像，但我希望能够在其上书写以获得最终图像http://2ol.us/scrie/lol.php。 $ image_file ='image.png'; ＆LT;＆LT;＆LT;＆LT;是一个单独的图像，告诉我如何做随机图像，不知道多少程序员在PHP我道歉，如果你可以帮助我，抱歉我的坏英语:(
<?php
$font_file = 'franklin.ttf';
$image_file = 'http://i642.photobucket.com/albums/uu143/paloma666/nature.png';
// customizable variables
$font_size = 47 ; // font size in pts
$font_color = '#FF0000' ;
// clean up the input
if(empty($_GET['text'])) fatal_error('Error: No text specified.') ;
$text = html_entity_decode($_GET['text']);
//$text = floatval($text);
//$text = number_format($text, 1, '.', '') . '%';
if(empty($text))
fatal_error('Error: Text not properly formatted.') ;
// x and y for the bottom right of the text
// so it expands like right aligned text
$x_finalpos = 247;
$y_finalpos = 137;
// 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($image) ;
exit ;
}
}
// send 500 code
header("HTTP/1.0 500 Internal Server Error") ;
print($message) ;
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 ;
}
?>
<?php
$font_file = 'franklin.ttf';
$image_file ='http://i642.photobucket.com/albums/uu143/paloma666/nature.png';
// customizable variables
$font_size = 47 ; // font size in pts
$font_color = '#FF0000' ;
// clean up the input
if(empty($_GET['text'])) fatal_error('Error: No text specified.') ;
$text = html_entity_decode($_GET['text']);
//$text = floatval($text);
//$text = number_format($text, 1, '.', '') . '%';
if(empty($text))
fatal_error('Error: Text not properly formatted.') ;
// x and y for the bottom right of the text
// so it expands like right aligned text
$x_finalpos = 247;
$y_finalpos = 137;
// 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($image) ;
exit ;
}
}
// send 500 code
header("HTTP/1.0 500 Internal Server Error") ;
print($message) ;
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 ;
}
?>
答案 0 :(得分：1)
一种可能性是拥有一组可能的图像，然后生成一个随机索引。
可能是这样的：
$array = array("example.com/image1.png","example.com/image2.png","example.com/image3.png");
$index = rand(0,count($array)-1);
$image_file = $array[$index];
我没有测试过代码，但它应该可以工作：）
答案 1 :(得分：1)
制作一个包含一些图像的数组或指向它们的链接，并使用array_rand()函数选择它们。