我用 TTF 字型在以下的範例中
我通常取名作 'button.php3':
#######################################################
-----button.php3------
<?
Header("Content-type: image/gif");
if(!isset($s)) $s=11;
$size = imagettfbbox($s,0,"fonts/TIMES.TTF",$text);
$dx = abs($size[2]-$size[0]);
$dy = abs($size[5]-$size[3]);
$xpad=9;
$ypad=9;
$im = imagecreate($dx+$xpad,$dy+$ypad);
$blue = ImageColorAllocate($im, 0x2c,0x6D,0xAF);
$black = ImageColorAllocate($im, 0,0,0);
$white = ImageColorAllocate($im, 255,255,255);
ImageRectangle($im,0,0,$dx+$xpad-1,$dy+$ypad-1,$black);
ImageRectangle($im,0,0,$dx+$xpad,$dy+$ypad,$white);
ImageTTFText($im, $s, 0, (int)($xpad/2)+1, $dy+(int)($ypad/2), $black, "fonts/TIMES.TTF", $text);
ImageTTFText($im, $s, 0, (int)($xpad/2), $dy+(int)($ypad/2)-1, $white, "fonts/TIMES.TTF", $text);
ImageGif($im);
ImageDestroy($im);
?>
#######################################################
很重要一點是你不能在這檔案中放任何HTML tags.也不能有空白行在 <?和 ?> tag 之前或之後. 如果你用這段Script後看到一個不完整的影像, 表示你可能在PHP標籤以外誤打了字元.
以上的 script 可以由此文法在網頁中叫出來: <IMG SRC="button.php3?s=36&text=PHP+is+Cool">
#######################################################
----test.php-----
<html>
<head>
<META HTTP-EQUIV="content-type" CONTENT="text/html; charset=gb2312">
<title>New Page 1</title>
</head>
<body>
<IMG SRC="button.php3?s=36&text=PHP+is+Cool">
</body>
</html>
#######################################################
test.php結果會像這樣: .
's' 參數是設定字型大小 .
這是當 s=18 時:
注I:
字型路徑 "/fonts/TIMES.TTF" 可由windows/fonts目錄下取得 TIMS.TTF 字型檔 Copy 至你網站的目錄 fonts下即可測試 至於中文的表現 尚待各位網友提供心得
注意 我先畫了一個黑色方塊區再用白色位移產生 3D 效果.也陬L法在淺色背景中看出來 但你可以把背景色改為深色看看此效果. 字型也做了同樣效果表現立體感.
你要先確定你的安裝 PHP 時有設定支援 GD 和 TTF. 可參考 PHP FAQ . 我建議可以 copy libgd.a 到 /usr/local/lib 和 gd*.h 相關檔案到 /usr/local/include 然後
'make install' for FreeTTF library.
可以在這http://rover.wiesbaden.netsurf.de/~kikita/ 找到釵httf 字型哦!
注:
以下的原始碼改進了上面的弁?可多行文字顯示:
#######################################################
--------------button.php-----------------
<?
Header("Content-type: image/jpeg");
if(!isset($bgred)) $bgred=0;
if(!isset($bggreen)) $bggreen=51;
if(!isset($bgblue)) $bgblue=153;
if(!isset($chred)) $chred=255;
if(!isset($chgreen)) $chgreen=255;
if(!isset($chblue)) $chblue=255;
if(!isset($shadow)) $shadow="yes";
if(!isset($wrappos)) $wrappos=20;
if(!isset($crop)) $crop=2.2;
if(!isset($jpegquality)) $jpegquality=80;
if(!isset($s)) $s=11;
$savetext=$text;
$text=wordwrap($text,$wrappos," ",0);
if (!isset($font)) $fontname="/www/ttfonts/arialbd.ttf";
else
$fontname="/www/ttfonts/".$font.".ttf";
$size = imagettfbbox($s,0,$fontname,$text);
$dx = abs($size[2]-$size[0]);
$dy = abs($size[5]-$size[3]);
$upper=abs($size[5]);
$under=$size[1];
$th=$upper-$under;
$xpad=9;
if (substr_count($text,chr(13))>=1)
{
$mult=(substr_count($text,chr(13)));
$ypad=($mult*$crop*$s)+$s;
}
else $ypad=($crop-2)*$s;
$im = imagecreate($dx+$xpad,$th+$ypad);
$color = ImageColorAllocate($im, $bgred,$bggreen,$bgblue);
$black = ImageColorAllocate($im, 0,0,0);
$fontcolor = ImageColorAllocate($im, $chred,$chgreen,$chblue);
ImageRectangle($im,0,0,$dx+$xpad-1,$th+$ypad-1,$black);
ImageRectangle($im,0,0,$dx+$xpad,$th+$ypad,$white);
if ($shadow=="yes")
ImageTTFText($im, $s, 0, (int)($xpad/2)-2+1, $th+2+(int)($ypad/2)-3, $black, $fontname, $text);
ImageTTFText($im, $s, 0, (int)($xpad/2)-2, $th+2+(int)($ypad/2)-1-3, $fontcolor, $fontname, $text);
Imagejpeg($im,"",$jpegquality);
ImageDestroy($im);
?>
#######################################################
這可以下面這個 form 來產生:
#######################################################
----------test.php--------------------
<html>
<head>
<title>New Page 1</title>
</head>
<body>
<form method="POST" action="button.php">
<p>文字<input type="text" name="text" size="60"></p>
<p>大小<input type="text" name="s" size="6" value="14"></p>
<p>斷句的位置(wrap break position) <input type="text" name="wrappos" size="3" value="20"></p>
<p>背景顏色</p>
<p>紅色<input type="text" name="bgred" size="6" value="0">
綠色<input type="text" name="bggreen" size="8" value="51">
藍色<input type="text" name="bgblue" size="7" value="153"></p>
<p>字元顏色</p>
<p>紅色 <input type="text" name="chred" size="6" value="255">
綠色 <input type="text" name="chgreen" size="8" value="255">
藍色 <input type="text" name="chblue" size="7" value="255"></p>
<p>字型 <input type="text" name="font" size="20" value="arialbd"></p>
<p>陰影 <input type="radio" value="yes" checked name="shadow">是
<input type="radio" name="shadow" value="no">否</p>
<p>Crop size <input type="text" name="crop" size="20" value="2.2"></p>
<p>Jpeg 品質 (0-100) <input type="text" name="jpegquality" size="20" value="80"></p>
<p><input type="submit" value="Submit" name="B1">
<input type="reset" value="Reset" name="B2"></p>
</form>
</body>
</html>
#######################################################
或是直接像上例一樣呼叫:
#######################################################
----test.php-----
<html>
<head>
<title>New Page 1</title>
</head>
<body>
<IMG SRC="button.php?s=36&text=PHP+is+Cool">
</body>
</html>
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