在网上抄了一个php图形的程序,运行显示红叉叉<?php
//header("Content-type:text/html;charset=utf-8");
$graphValues = array( 0, 80, 23, 11, 190, 245, 50, 80, 111, 240, 55 );
// Define .PNG image
header( "Content-type:image/png" );
$imgWidth = 250;
$imgHeight = 250;
$image = imagecreate( $imgWidth, $imgHeight );
$colorWhite = imagecolorallocate( $image, 255, 255, 255 );
$colorGrey = imagecolorallocate( $image, 192, 192, 192 );
$colorBlue = imagecolorallocate( $image, 0, 0, 255 );
imageline( $image, 0, 0, 0, 250, $colorGrey );
imageline( $image, 0, 0, 250, 0, $colorGrey );
imageline( $image, 249, 0, 249, 249, $colorGrey );
imageline( $image, 0, 249, 249, 249, $colorGrey );
for ( $i = 1; $i<count($graphValues)+1; $i )
{
imageline( $image, $i*25, 0, $i*25, 250, $colorGrey );
imageline( $image, 0, $i*25, 250, $i*25, $colorGrey );
}
for ( $i = 0; $i<count($graphValues)+1; $i )
{
imageline( $image, $i*25, ( 250-$graphValues[$i] ), ( $i 1 )*25, ( 250-$graphValues[$i 1] ), $colorBlue );
}
imagepng( $image );
imagedestroy( $image );
?>原来弄的一个验证码程序本来是可以运行的,今天在两台电脑上测试,竟然也都突然不能显示了<?php
if( !isset( $_SESSION ) ) session_start();
Header( "Content-type: image/PNG" );
srand( (double)microtime() * 1000000 );
$im = @imagecreate( 62, 20 );
$white = imageColorAllocate( $im, 255, 255, 255 );
$black = imageColorAllocate( $im, 0, 0, 0 );
$gray = imageColorAllocate( $im, 200, 200, 200 );
imagefill( $im, 68, 30, $gray ); $str = 'abcdefghijkmnpqrstuvwxyz0123456789';
$l = strlen($str);
for( $i=1; $i<=4; $i++ )
{
$num = rand( 0, $l-1 );
$authnum .= $str[$num];
} $_SESSION['validate'] = $authnum; //将四位整数验证码绘入图片
imagestring( $im, 5, 10, 3, $authnum, $black );
for( $i=0; $i<300; $i++ ) //加入干扰象素
{
$randcolor = ImageColorallocate( $im, rand( 0, 255 ), rand( 0, 255 ), rand( 0, 255 ) );
imagesetpixel( $im, rand()%70, rand()%30, $randcolor );
}
ImagePNG( $im );
ImageDestroy( $im );
?>运行phpinfo()显示GD库是enable
GD Support enabled
GD Version bundled (2.0.34 compatible)
FreeType Support enabled
FreeType Linkage with freetype
FreeType Version 2.1.9
T1Lib Support enabled
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
XBM Support enabled
不知为何会出现这样的现象,是不是运行过第一个程序之后自动修改了设置导致的呢?有没有高手遇到过这种情况,请指点一二,不胜感激!
//header("Content-type:text/html;charset=utf-8");
$graphValues = array( 0, 80, 23, 11, 190, 245, 50, 80, 111, 240, 55 );
// Define .PNG image
header( "Content-type:image/png" );
$imgWidth = 250;
$imgHeight = 250;
$image = imagecreate( $imgWidth, $imgHeight );
$colorWhite = imagecolorallocate( $image, 255, 255, 255 );
$colorGrey = imagecolorallocate( $image, 192, 192, 192 );
$colorBlue = imagecolorallocate( $image, 0, 0, 255 );
imageline( $image, 0, 0, 0, 250, $colorGrey );
imageline( $image, 0, 0, 250, 0, $colorGrey );
imageline( $image, 249, 0, 249, 249, $colorGrey );
imageline( $image, 0, 249, 249, 249, $colorGrey );
for ( $i = 1; $i<count($graphValues)+1; $i )
{
imageline( $image, $i*25, 0, $i*25, 250, $colorGrey );
imageline( $image, 0, $i*25, 250, $i*25, $colorGrey );
}
for ( $i = 0; $i<count($graphValues)+1; $i )
{
imageline( $image, $i*25, ( 250-$graphValues[$i] ), ( $i 1 )*25, ( 250-$graphValues[$i 1] ), $colorBlue );
}
imagepng( $image );
imagedestroy( $image );
?>原来弄的一个验证码程序本来是可以运行的,今天在两台电脑上测试,竟然也都突然不能显示了<?php
if( !isset( $_SESSION ) ) session_start();
Header( "Content-type: image/PNG" );
srand( (double)microtime() * 1000000 );
$im = @imagecreate( 62, 20 );
$white = imageColorAllocate( $im, 255, 255, 255 );
$black = imageColorAllocate( $im, 0, 0, 0 );
$gray = imageColorAllocate( $im, 200, 200, 200 );
imagefill( $im, 68, 30, $gray ); $str = 'abcdefghijkmnpqrstuvwxyz0123456789';
$l = strlen($str);
for( $i=1; $i<=4; $i++ )
{
$num = rand( 0, $l-1 );
$authnum .= $str[$num];
} $_SESSION['validate'] = $authnum; //将四位整数验证码绘入图片
imagestring( $im, 5, 10, 3, $authnum, $black );
for( $i=0; $i<300; $i++ ) //加入干扰象素
{
$randcolor = ImageColorallocate( $im, rand( 0, 255 ), rand( 0, 255 ), rand( 0, 255 ) );
imagesetpixel( $im, rand()%70, rand()%30, $randcolor );
}
ImagePNG( $im );
ImageDestroy( $im );
?>运行phpinfo()显示GD库是enable
GD Support enabled
GD Version bundled (2.0.34 compatible)
FreeType Support enabled
FreeType Linkage with freetype
FreeType Version 2.1.9
T1Lib Support enabled
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
XBM Support enabled
不知为何会出现这样的现象,是不是运行过第一个程序之后自动修改了设置导致的呢?有没有高手遇到过这种情况,请指点一二,不胜感激!
//header("Content-type:text/html;charset=utf-8");
$graphValues = array( 0, 80, 23, 11, 190, 245, 50, 80, 111, 240, 55 );
// Define .PNG image
header( "Content-type:image/png" );
$imgWidth = 250;
$imgHeight = 250;
$image = imagecreate( $imgWidth, $imgHeight );
$colorWhite = imagecolorallocate( $image, 255, 255, 255 );
$colorGrey = imagecolorallocate( $image, 192, 192, 192 );
$colorBlue = imagecolorallocate( $image, 0, 0, 255 );
imageline( $image, 0, 0, 0, 250, $colorGrey );
imageline( $image, 0, 0, 250, 0, $colorGrey );
imageline( $image, 249, 0, 249, 249, $colorGrey );
imageline( $image, 0, 249, 249, 249, $colorGrey );
for ( $i = 1; $i<count($graphValues)+1; $i++ )
{
imageline( $image, $i*25, 0, $i*25, 250, $colorGrey );
imageline( $image, 0, $i*25, 250, $i*25, $colorGrey );
}
for ( $i = 0; $i<count($graphValues)+1; $i++ )
{
imageline( $image, $i*25, ( 250-$graphValues[$i] ), ( $i+1 )*25, ( 250-$graphValues[$i+1] ), $colorBlue );
}
imagepng( $image );
imagedestroy( $image );
?>
//header("Content-type:text/html;charset=utf-8");
$graphValues = array( 0, 80, 23, 11, 190, 245, 50, 80, 111, 240, 55 );
// Define .PNG image
header( "Content-type:image/png" );
$imgWidth = 250;
$imgHeight = 250;
$image = imagecreate( $imgWidth, $imgHeight );
$colorWhite = imagecolorallocate( $image, 255, 255, 255 );
$colorGrey = imagecolorallocate( $image, 192, 192, 192 );
$colorBlue = imagecolorallocate( $image, 0, 0, 255 );
for( $i=0; $i<count($graphValues); $i++ )
{
imageline( $image, $i*25, 0, $i*25, 250, $colorGrey );
imageline( $image, 0, $i*25, 250, $i*25, $colorGrey );
}
for( $i=0; $i<count($graphValues)-1; $i++ )
{
imageline( $image, $i*25, ( 250-$graphValues[$i] ), ( $i+1 )*25, ( 250-$graphValues[$i+1] ), $colorBlue );
}
imagepng( $image );
imagedestroy( $image );
?>