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PHP ??? ?? ?? ???(????, ???) [?? ?? ? ??? ??? ???]

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Jul 25, 2016 am 08:44 AM

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??? ? ??: ??? ??? ?? ??? ????? ???? ?? ??? ??? ? ????. ??? ??? ???? ??? ? ????.image.php

/**
*
* ??? ?? ???
* @author FC_LAMP
* @internal ?? ??: ????, ???
*/
class Img
{
//??? ??
??? $exts = ??('jpg', 'jpeg', 'gif', 'bmp', 'png' );
/**
*
*
* @throws ??
*/
?? ?? __construct()
{
if (! function_exists ( 'gd_info' ))
{
throw new Exception ( 'GD ?????? ???? ?????!' );
}
}
/**
*
* ??? ? ??
* @param $src_img ???
* @param $save_img ?? ???
* @param $option ???? ??(?? ??): $maxwidth width $maxheight height
* array('width'=>xx,'height'=>xxx)
* @internal
* ???? ?? ??? ?? ?? ?? ???? ???? ??? ?? ??
*?? ????? ?? ??? ????? ???? ??? ?????.
*/
?? ?? Thumb_img($src_img, $save_img = '', $option)
{
if (?? ?? ( $option ['width'] ) ?? ?? ?? ( $option ['height'] ))
{
return array ('flag' => False, 'msg' = > '?? ???? ??? ??? 0?? ?? ? ????.' );
}
$org_ext = $this->is_img ( $src_img );
if (! $org_ext [' flag'])
{
return $org_ext;
}
//?? ??? ??? ??? ???? ??
if (!empty ( $save_img ))
{
$f = $this->check_dir ( $save_img );
if (! $f ['flag'])
{
return $f;
}
}
//?? ??? ????
$org_funcs = $this->get_img_funcs ( $org_ext ['msg'] );
//???? ?? ??
$source = $org_funcs ['create_func'] ( $src_img );
$src_w = Imagesx ( $source );
$src_h = imagey ( $source );
//?? ??? ??(??? ?? ?? ?? ??? ??)
$dst_scale = $option ['height'] / $option ['width'] // ?? ??? ?? ?? ??
$src_scale = $ src_h / $src_w; // ?? ??? ?? ?? ??
if ($src_scale >= $dst_scale)
{ // ?? ??
$w = intval ( $src_w );
$h = intval ( $dst_scale * $w ) ;
$x = 0;
$y = ($src_h - $h) / 3;
} else
{ // ?? ??
$h = intval ( $ src_h );
$w = intval ( $h / $dst_scale );
$x = ($src_w - $w) / 2;
$y = 0;
}
// ???
$croped = imagecreatetruecolor( $w, $h );
imagecopy( $croped, $source, 0, 0, $x, $y, $ src_w, $src_h );
// ?? ??
$scale = $option ['??'] / $w;
$target = imagecreatetruecolor ( $option ['??'], $option ['?? '] );
$ final_w = intval ( $w * $scale );
$final_h = intval ( $h * $scale );
imagecopyresampled ( $target, $croped, 0, 0, 0 , 0, $final_w, $final_h , $w, $h );
imagedestroy ( $croped );
//??(??) ???
if (!empty ( $save_img ))
{
$org_funcs ['save_func'] ( $target, $save_img );
} else
{
??( $org_funcs ['header'] );
$org_funcs ['save_func'] ( $target );
}
imagedestroy ( $target );
return array ('flag' => True, 'msg' => '' );
}
/**
*
* ??? ???
* @param $src_img ?? ???
* @param $save_img ?? ??
* @param $option ???? ?? array('width'= >xx ,'?'=>xxx)
*
*/
?? resize_image($src_img, $save_img = '', $option)
{
$org_ext = $this-> ;is_img ( $src_img );
if (! $org_ext ['flag'])
{
return $org_ext;
}
//?? ??? ?? ?? , ??? ???? ??
if (!empty ( $save_img ))
{
$f = $this->check_dir ( $save_img );
if (! $f [' flag'])
{
return $f;
}
}
//?? ??? ????
$org_funcs = $this->get_img_funcs ( $org_ext ['msg'] );
//?? ?? ????
$source = $org_funcs ['create_func'] ( $src_img );
$src_w = Imagesx ( $source );
$src_h = ??? ( $source );
if (($option ['??'] && $src_w > $option ['??']) || ($option ['??'] && $src_h > $option ['??' ]))
{
if ($option ['??'] && $src_w > $option ['??'])
{
$widthratio = $option ['??'] / $src_w;
$resizewidth_tag = true;
}
if ($option ['height'] && $src_h > $option [' height'])
{
$heightratio = $option ['height'] / $src_h;
$resizeheight_tag = true;
}
if ($resizewidth_tag && $resizeheight_tag )
{
if ($ widthratio < $heightratio)
$ratio = $widthratio;
else
$ratio = $heightratio;
}
if ($resizewidth_tag && ! $resizeheight_tag)
$ratio = $widthratio;
if ($resizeheight_tag && ! $resizewidth_tag)
$ratio = $heightratio;
$newwidth = $src_w * $ratio;
$newheight = $src_h * $ratio;
if (function_exists ( "imagecopyresampled" ))
{
$newim = imagecreatetruecolor ( $newwidth, $newheight );
imagecopyresampled( $newim, $source, 0 , 0, 0, 0, $newwidth, $newheight, $src_w, $src_h );
} else
{
$newim = imagecreate( $newwidth , $newheight );
imagecopyreised ( $ newim, $source, 0, 0, 0, 0, $newwidth, $newheight, $src_w, $src_h );
}
}
//?? ??(??)
if (!empty ( $save_img ))
{
$org_funcs ['save_func'] ( $newim, $save_img );
} else
{
??( $org_funcs ['header'] );
$org_funcs ['save_func']( $newim );
}
imagedestroy( $newim );
?? ?? ('flag' => True, 'msg' => '' );
}
/**
*
* ???? ??? ??
* @param $org_img ?? ???
* @param $mark_img ???? ???
* @param $save_img ????? ???? ??? Create? ?????. ????
* @param array $option ????? ?? ?? ??? ??? ????.
* x: ????? ?? ??, ???? ???? ???? ??? ? ????.
* y: ????? ?? ??, ???? ????? ??? ? ?
* alpha: ?? ?(??? ??), ???? 50
*/
?? ?? water_mark($org_img, $mark_img, $save_img = '', $option = array())
{
//?? ??
$org_ext = $this->is_img ( $org_img );
if ( ! $org_ext ['???'])
{
return $org_ext;
}
$mark_ext = $this->is_img ( $mark_img );
if (! $mark_ext [ ' flag'])
{
return $mark_ext;
}
//?? ??? ??? ??? ??? ??
if (!empty ( $save_img ))
{
$f = $this->check_dir ( $save_img );
if (! $f ['flag'])
{
return $f;
}
}
//?? ??? ????
$org_funcs = $this->get_img_funcs ( $org_ext ['msg'] );
$org_img_im = $org_funcs ['create_func' ] ( $org_img ) ;
$mark_funcs = $this->get_img_funcs ( $mark_ext ['msg'] );
$mark_img_im = $mark_funcs ['create_func'] ( $mark_img );
//???? ??? ?? ??
$mark_img_im_x = 0;
$mark_img_im_y = 0;
//???? ??? ?? ? ?? ??
$mark_img_w = ????imagesx ( $mark_img_im );
$mark_img_h = ???( $mark_img_im );
$org_img_w = ???????x( $org_img_im );
$org_img_h = ???x( $org_img_im );
/ /?? ??? ??
$x = $org_img_w - $mark_img_w;
$org_img_im_x = isset ( $option ['x'] ) ? $option ['x'] : $x;
$org_img_im_x = ($org_img_im_x > $org_img_w ?? $ org_img_im_x < 0) ? $x : $org_img_im_x;
$y = $org_img_h - $mark_img_h;
$org_img_im_y = isset ( $option ['y'] ) ? $option ['y'] : $ y;
$org_img_im_y = ($org_img_im_y > $org_img_h ?? $org_img_im_y < 0) ? $y : $org_img_im_y;
//??
$alpha = isset ( $option [' alpha'] ) ? $option ['alpha'] : 50;
$alpha = ($alpha > 100 ?? $alpha < 50) : $alpha;
//??? ??
imagecopymerge ( $org_img_im, $mark_img_im, $org_img_im_x, $org_img_im_y, $mark_img_im_x, $mark_img_im_y, $mark_img_w, $mark_img_h, $alpha );
/ /??(??) ???
if (!empty ( $save_img ))
{
$org_funcs ['save_func'] ( $org_img_im, $save_img );
} else
{
??( $org_funcs [ 'header'] );
$org_funcs ['save_func']( $org_img_im );
}
//??? ??
imagedestroy( $org_img_im );
imagedestroy ( $mark_img_im );
return array ('flag' => True, 'msg' => '' );
}
/* *
*
* ??? ??
* @paramknown_type $img_path
* @return array('flag'=>true/false,'msg'=>ext/error message)
*/
??? ?? is_img($img_path)
{
if (!file_exists ( $img_path ))
{
?? ?? ('flag' => False, 'msg' => "$img_path ??? ?? ??! " );
}
$ext = ??( '.', $img_path );
$ext = strtolower( end( $ext ) );
if(!in_array( $ext, $ this->exts ))
{
return array ('flag' => False, 'msg' => "$img_path ???? ??? ???????!" );
}
?? ?? ('flag' => True, 'msg' => $ext );
}
/**
*
* ??? ??? ??? ?????
* @paramknown_type $ext
*/
??? ?? get_img_funcs($ext)
{
//選擇
???($ext)
{
case 'jpg' :
$header = 'Content-Type: image/jpeg';
$createfunc = 'imagecreatefromjpeg';
$savefunc = 'imagejpeg';
break;
case 'jpeg' :
$header = 'Content-Type:image /jpeg';
$createfunc = 'imagecreatefromjpeg';
$savefunc = 'imagejpeg';
break;
case 'gif' :
$header = 'Content-Type:image/ gif';
$createfunc = 'imagecreatefromgif';
$savefunc = 'imagegif';
break;
case 'bmp' :
$header = '??? ??:???/bmp ';
$createfunc = 'imagecreatefrombmp';
$savefunc = 'imagebmp';
break;
???:
$header = 'Content-Type:image/png';
$createfunc = 'imagecreatefrompng';
$savefunc = 'imagepng';
}
?? ??('save_func' => $savefunc, 'create_func' => $createfunc, 'header' = > $header );
}
/**
*
* ????? ???? ??? ???.
* @param $save_img
*/
??? ?? check_dir($save_img)
{
$dir = dirname ( $save_img );
??(! is_dir ( $dir ))
{
if (! mkdir ( $dir, 0777, true ))
{
return array ('flag' => False, 'msg' => "圖文保存目錄 $dir 無法創(chuàng)建!" );
}
}
?? ?? ('flag' => True, 'msg' => '' );
}
}
if (! ?? ?? ( $_FILES ['test'] ['tmp_name'] ))
{
//例子
$img = new Img ();
//??
$name = ??( '.', $_FILES ['test'] ['name'] );
$org_img = 'D:/test.' . end ( $name );
move_uploaded_file ( $_FILES ['test'] ['tmp_name'], $org_img );
$option = array ('width' => $_POST ['width'], '??' => $_POST ['??'] );
if ($_POST ['type'] == 1)
{
$s = $img->resize_image ( $org_img , '', $option );
} else
{
$img->thumb_img( $org_img, '', $option );
}
?? ??( $org_img );
}

復代碼

?? ??:

水印

$img = ? Img();
$org_img = 'D:/tt.png';
$mark_img = 'D:/t .png';
//保存水印圖 Images(如果$save_img為空時，將會直接輸圖文)
$save_img = 'D:/test99h/testone/sss.png';
//水印設(shè)置調(diào)節(jié)
$option = array ('x' => 50, 'y' => 50, 'alpha' => 80 );
//生成水印圖文
$flag = $img->water_mark ( $org_img, $mark_img, $save_img, $option );

復代碼

當我們調(diào)節(jié) $option 參數(shù)時，會有數(shù)變化：

1 $option = ??('x' => 0, 'y' => 0, '??' => 50 );

2$option = ??('x' => 50, 'y' => 50, '??' => 80 );

3 如果你不設(shè)置$option 參數(shù)，將會采用默認值:

如果要純文字式的水印,可以參看這里:http://www.php.net/manual/zh/image.examples.merged-watermark.php

//例子
$img = ? ???();
$org_img = 'D:/tt.png';
//壓縮圖picture(100*100)
$option = array ('width' => 100, 'height' => 100 );
//$save_img為空時，將會直接輸?圖???到瀏覽器
$save_img = 'D:/test99h/testone/sss_thumb.png';
$flag = $img->thumb_img ( $org_img, $save_img, $option );

復代碼

調(diào)節(jié)$??? ? ??:

$option = ??('??' => 200, '??' => 200);

???碼

水印與壓縮圖

$img = new Img ();
//hara圖
$org_img = 'D:/tt.png';
//水印標記圖
$mark_img = 'D:/t.png';
//保存水印圖文
$save_img = 'D:/test99h/testone/sss.png';
//水印設(shè)置調(diào)節(jié)
$option = array ('x' => 50, 'y' => 50, 'alpha' => 60 );
//生成水印圖文
$flag = $img->water_mark ( $org_img, $mark_img, $save_img, $option );
//壓縮水印圖文
$option = array ('??' => 200, '??' => 200 );
//保存壓縮圖
$save_img2 = 'D:/test99h/testone/sss2_thumb.png';
$flag = $img->thumb_img ( $save_img, $save_img2, $ ?? ); //等比例壓縮類似

復代碼

??? ???? ???? ??? ?, ?? ? ??? ???? ??? ?? ??? ? ???? ???? ???? ???. ??? ??? ? ? ?? ??? ?????.

?? ??: ??? ??? ??? ?? ??? ?? ????.

??? ??, ??, PHP

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