首先需要确认gd库是否正常，如果是合成图片，请确保把分解的图片放在frames的文件夹里面。
gifencoder.class.php 类
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 << 8 ) | ( $gif_blu 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 ] { $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 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 ] ) - $locals_str - 1; $locals_tmp = substr ( $this->buf [ $i ], $locals_str, $locals_end ); $global_len = 2 > 8 ) & 0xff ) . \x0\x0; if ( $this->col > -1 && ord ( $this->buf [ $i ] { 10 } ) & 0x80 ) { for ( $j = 0; $j > 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 ); } } ?>
为大家分享两个实例供大家参考：
实例 1 合成gif动画：
getanimation ( ) ); */ header ( 'content-type:image/gif' ); echo $gif->getanimation ( ); ?>
实例 2 创建gif动画：
$game_width){ $xv = -1*$xv; $x = $game_width - ($x-$game_width); }elseif($x $game_height){ $yv = -1*$yv; $y = $game_height - ($y - $game_height); }elseif($y
以上就是教大家如何利用php合成或是创建gif动画，希望大家仔细研究分享的两个实例，有所收获。