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    ▪php 将bmp图片转为jpg等其他任意格式的图片       代码如下:<? php // 例子： $path = ROOT . ' upload/2009/06/03/124401282315771. ' ; $pathAll = $path . ' bmp ' ; $mi = '' ; $mi = ImageCreateFromBMP( $pathAll ); imagejpeg( $mi , $path . ' jpg ' ); // 函数如下： function ImageCreateFrom.........

    ▪PHP 彩色文字实现代码       最近流行彩字,下面是简单的实现方法: 一.彩字的简单实现 代码如下:header("content-type: image/png"); $text = $_get['t']; $font = 'stxingka.ttf'; //ttf字体 $fontsize = 30; $size = imagettfbbox($fontsize, 0, $font, $text); /.........

    ▪php 过滤危险html代码       #用户发布的html,过滤危险代码 代码如下:function uh($str) { $farr = array( "/\s+/", //过滤多余的空白 "/<(\/?)(scripti?framestylehtmlbodytitlelinkmeta\?\%)([^>]*?)>/isU", //过滤 <script 等可能引入恶意内容.........

代码如下:

<? php
// 例子：
$path = ROOT . ' upload/2009/06/03/124401282315771. ' ;
$pathAll = $path . ' bmp ' ;
$mi = '' ;
$mi = ImageCreateFromBMP( $pathAll );
imagejpeg( $mi , $path . ' jpg ' );
// 函数如下：
function ImageCreateFromBMP( $filename )
{
// Ouverture du fichier en mode binaire
if ( ! $f1 = fopen ( $filename , " rb " )) return FALSE ;
// 1 : Chargement des ent�tes FICHIER
$FILE = unpack ( " vfile_type/Vfile_size/Vreserved/Vbitmap_offset " , fread ( $f1 , 14 ));
if ( $FILE [ ' file_type ' ] != 19778 ) return FALSE ;
// 2 : Chargement des ent�tes BMP
$BMP = unpack ( ' Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel ' .
' /Vcompression/Vsize_bitmap/Vhoriz_resolution ' .
' /Vvert_resolution/Vcolors_used/Vcolors_important ' , fread ( $f1 , 40 ));
$BMP [ ' colors ' ] = pow ( 2 , $BMP [ ' bits_per_pixel ' ]);
if ( $BMP [ ' size_bitmap ' ] == 0 ) $BMP [ ' size_bitmap ' ] = $FILE [ ' file_size ' ] - $FILE [ ' bitmap_offset ' ];
$BMP [ ' bytes_per_pixel ' ] = $BMP [ ' bits_per_pixel ' ] / 8 ;
$BMP [ ' bytes_per_pixel2 ' ] = ceil ( $BMP [ ' bytes_per_pixel ' ]);
$BMP [ ' decal ' ] = ( $BMP [ ' width ' ] * $BMP [ ' bytes_per_pixel ' ] / 4 );
$BMP [ ' decal ' ] -= floor ( $BMP [ ' width ' ] * $BMP [ ' bytes_per_pixel ' ] / 4 );
$BMP [ ' decal ' ] = 4 - ( 4 * $BMP [ ' decal ' ]);
if ( $BMP [ ' decal ' ] == 4 ) $BMP [ ' decal ' ] = 0 ;
// 3 : Chargement des couleurs de la palette
$PALETTE = array ();
if ( $BMP [ ' colors ' ] < 16777216 )
{
$PALETTE = unpack ( ' V ' . $BMP [ ' colors ' ] , fread ( $f1 , $BMP [ ' colors ' ] * 4 ));
}
// 4 : Cr�ation de l'image
$IMG = fread ( $f1 , $BMP [ ' size_bitmap ' ]);
$VIDE = chr ( 0 );
$res = imagecreatetruecolor( $BMP [ ' width ' ] , $BMP [ ' height ' ]);
$P = 0 ;
$Y = $BMP [ ' height ' ] - 1 ;
while ( $Y >= 0 )
{
$X = 0 ;
while ( $X < $BMP [ ' width ' ])
{
if ( $BMP [ ' bits_per_pixel ' ] == 24 )
$COLOR = unpack ( " V " , substr ( $IMG , $P , 3 ) . $VIDE );
elseif ( $BMP [ ' bits_per_pixel ' ] == 16 )
{
$COLOR = unpack ( " n " , substr ( $IMG , $P , 2 ));
$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];
}
elseif ( $BMP [ ' bits_per_pixel ' ] == 8 )
{
$COLOR = unpack ( " n " , $VIDE . substr ( $IMG , $P , 1 ));
$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];
}
elseif ( $BMP [ ' bits_per_pixel ' ] == 4 )
{
$COLOR = unpack ( " n " , $VIDE . substr ( $IMG , floor ( $P ) , 1 ));
if (( $P * 2 ) % 2 == 0 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] >> 4 ) ; else $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x0F );
$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];
}
elseif ( $BMP [ ' bits_per_pixel ' ] == 1 )
{
$COLOR = unpack ( " n " , $VIDE . substr ( $IMG , floor ( $P ) , 1 ));
if (( $P * 8 ) % 8 == 0 ) $COLOR [ 1 ] = $COLOR [ 1 ] >> 7 ;
elseif (( $P * 8 ) % 8 == 1 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x40 ) >> 6 ;
elseif (( $P * 8 ) % 8 == 2 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x20 ) >> 5 ;
elseif (( $P * 8 ) % 8 == 3 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x10 ) >> 4 ;
elseif (( $P * 8 ) % 8 == 4 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x8 ) >> 3 ;
elseif (( $P * 8 ) % 8 == 5 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x4 ) >> 2 ;
elseif (( $P * 8 ) % 8 == 6 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x2 ) >> 1 ;
elseif (( $P * 8 ) % 8 == 7 ) $COLOR [ 1 ] = ( $COLOR [ 1 ] & 0x1 );
$COLOR [ 1 ] = $PALETTE [ $COLOR [ 1 ] + 1 ];
}
else
return FALSE ;
imagesetpixel( $res , $X , $Y , $COLOR [ 1 ]);
$X ++ ;
$P += $BMP [ ' bytes_per_pixel ' ];
}
$Y -- ;
$P += $BMP [ ' decal ' ];
}
// Fermeture du fichier
fclose ( $f1 );
return $res ;
}
?>

代码如下:

header("content-type: image/png");
$text = $_get['t'];
$font = 'stxingka.ttf'; //ttf字体
$fontsize = 30;
$size = imagettfbbox($fontsize, 0, $font, $text); //获得字体长宽范围
$dx = abs($size[2]-$size[0]) +10;
$dy = abs($size[5]-$size[3]);
//构建图像
$im = imagecreate($dx,$dy);
imagecolorallocate($im, 255,255, 255); //背景色
$fontcolor = imagecolorallocate($im, 255, 0, 0); //字体颜色
imagettftext($im, $fontsize, 0, 0, abs($size[5]), $fontcolor, $font, $text);
imagepng($im);
imagedestroy($im);

代码如下:

function smarty_modifier_ubb($string){
$ubb = array(
'/\[b\](.+?)\[\/b\]/i', #加粗
'/\[url=(.+?)\](.+?)\[\/url\]/i', #url
'/\[colorfont\](.+?)\[\/colorfont\]/ie' #彩字,注意,要加e修饰符
);
$tohtml = array(
'<b>\\1</b>',
'<a href="\\1">\\2</a>',
'"<img src=/index.html'color.php?t=".urlencode("\\1")."\'/>"'
);
//以上只是演ubb的实现,更多的ubb标签朋友们可以按方法自己实现,其中的color.php根椐实际去修改
return preg_replace($ubb,$tohtml,$string);
}

代码如下:

function uh($str)
{
$farr = array(
"/\s+/", //过滤多余的空白
"/<(\/?)(scripti?framestylehtmlbodytitlelinkmeta\?\%)([^>]*?)>/isU", //过滤 <script 等可能引入恶意内容或恶意改变显示布局的代码,如果不需要插入flash等,还可以加入<object的过滤
"/(<[^>]*)on[a-zA-Z]+\s*=([^>]*>)/isU", //过滤javascript的on事件
);
$tarr = array(
" ",
"＜\\1\\2\\3＞", //如果要直接清除不安全的标签，这里可以留空
"\\1\\2",
);
$str = preg_replace( $farr,$tarr,$str);
return $str;
}