php合成可能创建gif动画

php合成或者创建gif动画

1. 首先需要确认GD库是否正常。

?

2. 如何是合成图片，请确保把分解的图片放在frames的文件夹里面。

?

3. GIFEncoder.class.php 类

?

?

Class GIFEncoder {
        var $GIF = "GIF89a";                /* GIF header 6 bytes        */
        var $VER = "GIFEncoder V2.06";        /* Encoder version                */

        var $BUF = Array ( );
        var $LOP =  0;
        var $DIS =  2;
        var $COL = -1;
        var $IMG = -1;

        var $ERR = Array (
                'ERR00' =>"Does not supported function for only one image!",
                'ERR01' =>"Source is not a GIF image!",
                'ERR02' =>"Unintelligible flag ",
                'ERR03' =>"Could not make animation from animated GIF source",
        );

        /*
        :::::::::::::::::::::::::::::::::::::::::::::::::::
        ::
        ::        GIFEncoder...
        ::
        */
        function GIFEncoder        (
                                                        $GIF_src, $GIF_dly, $GIF_lop, $GIF_dis,
                                                        $GIF_red, $GIF_grn, $GIF_blu, $GIF_mod
                                                ) {
                if ( ! is_array ( $GIF_src ) && ! is_array ( $GIF_tim ) ) {
                        printf        ( "%s: %s", $this->VER, $this->ERR [ 'ERR00' ] );
                        exit        ( 0 );
                }
                $this->LOP = ( $GIF_lop > -1 ) ? $GIF_lop : 0;
                $this->DIS = ( $GIF_dis > -1 ) ? ( ( $GIF_dis COL = ( $GIF_red > -1 && $GIF_grn > -1 && $GIF_blu > -1 ) ?
                                                ( $GIF_red | ( $GIF_grn BUF [ ] = fread ( fopen ( $GIF_src [ $i ], "rb" ), filesize ( $GIF_src [ $i ] ) );
                        }
                        else if ( strToLower ( $GIF_mod ) == "bin" ) {
                                $this->BUF [ ] = $GIF_src [ $i ];
                        }
                        else {
                                printf        ( "%s: %s ( %s )!", $this->VER, $this->ERR [ 'ERR02' ], $GIF_mod );
                                exit        ( 0 );
                        }
                        if ( substr ( $this->BUF [ $i ], 0, 6 ) != "GIF87a" && substr ( $this->BUF [ $i ], 0, 6 ) != "GIF89a" ) {
                                printf        ( "%s: %d %s", $this->VER, $i, $this->ERR [ 'ERR01' ] );
                                exit        ( 0 );
                        }
                        for ( $j = ( 13 + 3 * ( 2 BUF [ $i ] { 10 } ) & 0x07 ) ) ), $k = TRUE; $k; $j++ ) {
                                switch ( $this->BUF [ $i ] { $j } ) {
                                        case "!":
                                                if ( ( substr ( $this->BUF [ $i ], ( $j + 3 ), 8 ) ) == "NETSCAPE" ) {
                                                        printf        ( "%s: %s ( %s source )!", $this->VER, $this->ERR [ 'ERR03' ], ( $i + 1 ) );
                                                        exit        ( 0 );
                                                }
                                                break;
                                        case ";":
                                                $k = FALSE;
                                                break;
                                }
                        }
                }
                GIFEncoder::GIFAddHeader ( );
                for ( $i = 0; $i BUF ); $i++ ) {
                        GIFEncoder::GIFAddFrames ( $i, $GIF_dly [ $i ] );
                }
                GIFEncoder::GIFAddFooter ( );
        }
        /*
        :::::::::::::::::::::::::::::::::::::::::::::::::::
        ::
        ::        GIFAddHeader...
        ::
        */
        function GIFAddHeader ( ) {
                $cmap = 0;

                if ( ord ( $this->BUF [ 0 ] { 10 } ) & 0x80 ) {
                        $cmap = 3 * ( 2 BUF [ 0 ] { 10 } ) & 0x07 ) );

                        $this->GIF .= substr ( $this->BUF [ 0 ], 6, 7                );
                        $this->GIF .= substr ( $this->BUF [ 0 ], 13, $cmap        );
                        $this->GIF .= "!\377\13NETSCAPE2.0\3\1" . GIFEncoder::GIFWord ( $this->LOP ) . "\0";
                }
        }
        /*
        :::::::::::::::::::::::::::::::::::::::::::::::::::
        ::
        ::        GIFAddFrames...
        ::
        */
        function GIFAddFrames ( $i, $d ) {

                $Locals_str = 13 + 3 * ( 2 BUF [ $i ] { 10 } ) & 0x07 ) );

                $Locals_end = strlen ( $this->BUF [ $i ] ) - $Locals_str - 1;
                $Locals_tmp = substr ( $this->BUF [ $i ], $Locals_str, $Locals_end );

                $Global_len = 2 BUF [ 0  ] { 10 } ) & 0x07 );
                $Locals_len = 2 BUF [ $i ] { 10 } ) & 0x07 );

                $Global_rgb = substr ( $this->BUF [ 0  ], 13,
                                                        3 * ( 2 BUF [ 0  ] { 10 } ) & 0x07 ) ) );
                $Locals_rgb = substr ( $this->BUF [ $i ], 13,
                                                        3 * ( 2 BUF [ $i ] { 10 } ) & 0x07 ) ) );

                $Locals_ext = "!\xF9\x04" . chr ( ( $this->DIS > 0 ) & 0xFF ) . chr ( ( $d >> 8 ) & 0xFF ) . "\x0\x0";

                if ( $this->COL > -1 && ord ( $this->BUF [ $i ] { 10 } ) & 0x80 ) {
                        for ( $j = 0; $j BUF [ $i ] { 10 } ) & 0x07 ) ); $j++ ) {
                                if        (
                                                ord ( $Locals_rgb { 3 * $j + 0 } ) == ( $this->COL >>  0 ) & 0xFF &&
                                                ord ( $Locals_rgb { 3 * $j + 1 } ) == ( $this->COL >>  8 ) & 0xFF &&
                                                ord ( $Locals_rgb { 3 * $j + 2 } ) == ( $this->COL >> 16 ) & 0xFF
                                        ) {
                                        $Locals_ext = "!\xF9\x04" . chr ( ( $this->DIS > 0 ) & 0xFF ) . chr ( ( $d >> 8 ) & 0xFF ) . chr ( $j ) . "\x0";
                                        break;
                                }
                        }
                }
                switch ( $Locals_tmp { 0 } ) {
                        case "!":
                                $Locals_img = substr ( $Locals_tmp, 8, 10 );
                                $Locals_tmp = substr ( $Locals_tmp, 18, strlen ( $Locals_tmp ) - 18 );
                                break;
                        case ",":
                                $Locals_img = substr ( $Locals_tmp, 0, 10 );
                                $Locals_tmp = substr ( $Locals_tmp, 10, strlen ( $Locals_tmp ) - 10 );
                                break;
                }
                if ( ord ( $this->BUF [ $i ] { 10 } ) & 0x80 && $this->IMG > -1 ) {
                        if ( $Global_len == $Locals_len ) {
                                if ( GIFEncoder::GIFBlockCompare ( $Global_rgb, $Locals_rgb, $Global_len ) ) {
                                        $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_tmp );
                                }
                                else {
                                        $byte  = ord ( $Locals_img { 9 } );
                                        $byte |= 0x80;
                                        $byte &= 0xF8;
                                        $byte |= ( ord ( $this->BUF [ 0 ] { 10 } ) & 0x07 );
                                        $Locals_img { 9 } = chr ( $byte );
                                        $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_rgb . $Locals_tmp );
                                }
                        }
                        else {
                                $byte  = ord ( $Locals_img { 9 } );
                                $byte |= 0x80;
                                $byte &= 0xF8;
                                $byte |= ( ord ( $this->BUF [ $i ] { 10 } ) & 0x07 );
                                $Locals_img { 9 } = chr ( $byte );
                                $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_rgb . $Locals_tmp );
                        }
                }
                else {
                        $this->GIF .= ( $Locals_ext . $Locals_img . $Locals_tmp );
                }
                $this->IMG  = 1;
        }
        /*
        :::::::::::::::::::::::::::::::::::::::::::::::::::
        ::
        ::        GIFAddFooter...
        ::
        */
        function GIFAddFooter ( ) {
                $this->GIF .= ";";
        }
        /*
        :::::::::::::::::::::::::::::::::::::::::::::::::::
        ::
        ::        GIFBlockCompare...
        ::
        */
        function GIFBlockCompare ( $GlobalBlock, $LocalBlock, $Len ) {

                for ( $i = 0; $i > 8 ) & 0xFF ) );
        }
        /*
        :::::::::::::::::::::::::::::::::::::::::::::::::::
        ::
        ::        GetAnimation...
        ::
        */
        function GetAnimation ( ) {
                return ( $this->GIF );
        }
}

?>

?

4. 实例 1 合成gif动画：

?

?

<?php include "GIFEncoder.class.php";
/*
	Build a frames array from sources...
*/
if ( $dh = opendir ( "frames/" ) ) {
	while ( false !== ( $dat = readdir ( $dh ) ) ) {
		if ( $dat != "." && $dat != ".." ) {
			$frames [ ] = "frames/$dat";
			$framed [ ] = 5;
		}
	}
	closedir ( $dh );
}
/*
		GIFEncoder constructor:
        =======================

		image_stream = new GIFEncoder	(
							URL or Binary data	'Sources'
							int					'Delay times'
							int					'Animation loops'
							int					'Disposal'
							int					'Transparent red, green, blue colors'
							int					'Source type'
						);
*/
$gif = new GIFEncoder	(
			$frames,
			$framed,
			0,
			2,
			0, 0, 0,
			"url"
		);
/*
		Possibles outputs:
		==================

        Output as GIF for browsers :
        	- Header ( 'Content-type:image/gif' );
        Output as GIF for browsers with filename:
        	- Header ( 'Content-disposition:Attachment;filename=myanimation.gif');
        Output as file to store into a specified file:
        	- FWrite ( FOpen ( "myanimation.gif", "wb" ), $gif->GetAnimation ( ) );
*/
Header ( 'Content-type:image/gif' );
echo	$gif->GetAnimation ( );
?>

?

?

5. 实例 2 创建gif动画：

?

<?php include "GIFEncoder.class.php";

ob_start();
$board_width = 60;
$board_height = 60;
$pad_width = 5;
$pad_height = 15;
$ball_size = 5;
$game_width = $board_width - $pad_width*2 - $ball_size;
$game_height = $board_height-$ball_size;

$x = 0;
$y = rand(0,$game_height);
$xv = rand(1,10);
$yv = rand(1,10);
$pt[] = array($x,$y);
do{
        $x += $xv;
        $y += $yv;
        if($x > $game_width){
                $xv = -1*$xv;
                $x = $game_width - ($x-$game_width);
        }elseif($x $game_height){
                $yv = -1*$yv;
                $y = $game_height - ($y - $game_height);
        }elseif($yGetAnimation();
?>

?

?

?

?

6. 全部内容见附件。

?

?

?

?

?