PHP Generate text Image effect

PHP Generate text Image effect
Recently see the GD function of PHP, try to make a basic text image effect of the code:

Display text Picture page: demo.php
<?php
$STR = $_request[' str ']? $_request[' str ']: "No input";
$str = "People's Republic of China";
$im = Imagecreate (200,200);
$white = Imagecolorallocate ($im, 0xff,0xff,0xff);
Imagecolortransparent ($im, $white); Imagecolortransparent () sets the specific color to be a transparent color, if the annotation

$black = Imagecolorallocate ($im, 0x00,0x00,0x00);
Imagefilledrectangle ($im, 50,50,150,150, $black);
Imagestring ($im, 5,50,160, "Happy every Day", $black);

Imagettftext ($im, 15,0,50,40, $black, "D:\windows\Fonts\simhei.ttf", $str); Font Settings section Linux and Windows may have different paths
Header ("Content-type:image/png");
Imagepng ($im);
?>

Call Picture page: demo2.php
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<?php $var = "People's Republic of China";?>

Text Image advanced:
Environment: Red Hat As4.0+gd2.0.28+freetype 2.1.9
Purpose: Create a link-like, underlined blue text image

Get the text and convert it into a picture
$str = UrlDecode ($_request[' str ')? UrlDecode ($_request[' str '): "No input";
$str = "People's Republic of China";
$font _file = "/usr/share/fonts/zh_cn/truetype/gbsn00lp.ttf";//font setting part of the Linux path
$text = $str; The string to display
$font _size = 14; Font size
$arr = Imagettfbbox ($font _size,0, $font _file, $text); Determine the position of the string that will change
$text _width = $arr [2]-$arr [0]; String text box length
$text _height = $arr [3]-$arr [5]; String text Box height

$im = Imagecreate ($text _width, $text _height);
$white = Imagecolorallocate ($im, 0xff,0xff,0xff);
Imagecolortransparent ($im, $white); Imagecolortransparent () sets the specific color to be a transparent color, if the annotation
$blue = Imagecolorallocate ($im, 0,0,255);

$arr = Imagettftext ($im, $font _size,0,0, $text _height-5, $blue, $font _file, $text);
Imageline ($im, $arr [0], $arr [1], $arr [2], $arr [3], $blue);
Imagettftext ($im, 12,0,0,20, $black, "C:\windows\Fonts\simhei.ttf", $url);//font Set the path to Windows

Header ("Content-type:image/png");
Imagepng ($im);
Imagedestroy ($im);

Text watermark:
<?php
$pic =imagecreate (250,30);
$black =imagecolorallocate ($pic, 0,0,0);
$white =imagecolorallocate ($pic, 255,255,255);
$font = "C://windows//fonts//simhei.ttf";
$str = ' php '. Iconv (' gb2312 ', ' utf-8 ', ' face object '). "Ovliverlin.cnblogs.com";
Imagettftext ($pic, 10,0,10,20, $white, $font, $STR);

Header ("Content-type:image/jpeg");
$filename = '. /src/images/photo.jpg ';
$im =imagecreatefromjpeg ($filename);
Imagecopymerge ($im, $pic, 0,0,0,0,250,30,50);
Imagejpeg ($im);
?>

PHP Generate text Image effect