创建从PHP文本图像 - 我怎样才能使多？(Creating IMage from Text in

我有一个使用PHP从文本中生成图像的脚本。 它的工作只是我想它产生多行文本以及与不同颜色的罚款。 如何可以在使用PHP，GD和Freetype的做什么？ 下面是我用它来生成单行文本图像的代码。

$textval = 'This is some text to be an image';
$textcolor = '666666';


$font="arial.ttf";
$size = 9;
$padding= 1;
$bgcolor= "ffffff";

$transparent = 0;
$antialias = 0;

$fontfile = $fontpath.$font;

$box= imageftbbox( $size, 0, $fontfile, $textval, array());
$boxwidth= $box[4];
$boxheight= abs($box[3]) + abs($box[5]);
$width= $boxwidth + ($padding*2) + 1;
$height= $boxheight + ($padding) + 0;
$textx= $padding;
$texty= ($boxheight - abs($box[3])) + $padding;

// create the image
$png= imagecreate($width, $height);


$color = str_replace("#","",$bgcolor);
$red = hexdec(substr($bgcolor,0,2));
$green = hexdec(substr($bgcolor,2,2));
$blue = hexdec(substr($bgcolor,4,2));
$bg = imagecolorallocate($png, $red, $green, $blue);

$color = str_replace("#","",$textcolor);
$red = hexdec(substr($textcolor,0,2));
$green = hexdec(substr($textcolor,2,2));
$blue = hexdec(substr($textcolor,4,2));
$tx = imagecolorallocate($png, $red, $green, $blue);



imagettftext( $png, $size, 0, $textx, $texty, $tx, $fontfile, $textval );

header("content-type: image/jpeg");
imagejpeg($png);
imagedestroy($png);
exit;

Answer 1:

添加这种功能，它进入你的函数之前自动换行。

function wrap($fontSize, $angle, $fontFace, $string, $width){

    $ret = "";

    $arr = explode(' ', $string);

    foreach ( $arr as $word ){

        $teststring = $ret.' '.$word;
        $testbox = imagettfbbox($fontSize, $angle, $fontFace, $teststring);
        if ( $testbox[2] > $width ){
            $ret.=($ret==""?"":"\n").$word;
        } else {
            $ret.=($ret==""?"":' ').$word;
        }
    }

    return $ret;
}

来源： http://www.php.net/imagettftext

文章来源: Creating IMage from Text in PHP - how can I make multiline?