感謝我們使用的字體,Kerning沒有爲我們工作,所以我們必須爲AV,AW等特定字母組合進行手動字距調整。
/**
* This function lets you write a string with your own letter spacing ($t)
* and kern specific letter combinations like AV
*
* @param type $im An image resource, returned by one of the image creation functions
* @param type $size The font size. Depending on your version of GD, this should be specified as the pixel size (GD1) or point size (GD2).
* @param type $angle The angle in degrees, with 0 degrees being left-to-right reading text. Higher values represent a counter-clockwise rotation. For example, a value of 90 would result in bottom-to-top reading text.
* @param type $t Letter Spacing
* @param type $k Kerning Spacing
* @param type $x The coordinates given by x and y will define the basepoint of the first character (roughly the lower-left corner of the character). This is different from the imagestring(), where x and y define the upper-left corner of the first character. For example, "top left" is 0, 0.
* @param type $y The y-ordinate. This sets the position of the fonts baseline, not the very bottom of the character.
* @param type $color The color index. Using the negative of a color index has the effect of turning off antialiasing. See imagecolorallocate().
* @param type $font The path to the TrueType font you wish to use.
* @param type $text Text to write/print to the image
*/
function ImageTTFTextWithSpacing($im, $size, $angle, $t, $k, $x, $y, $color, $font, $text) {
$numchar = strlen($text);
for($i = 0; $i < $numchar; $i++) {
# Assign character
$char[$i] = substr($text, $i, 1);
//Top is wider than bottom of character
$up = ['Y','V','W'];
//Bottom is wider than top of character
$down = ['A'];
//From the second letter on
if($i > 0 &&
//check whether we have TOP and BOTTOM type character
//next to each other so we need to adjust spacing
((in_array($char[$i], $up) && in_array($char[$i-1], $down)) ||
(in_array($char[$i-1], $up) && in_array($char[$i], $down)))) {
$w -= $k;
}
# Write character
imagettftext($im, $size, $angle, ($x + $w + ($i * $t)), $y, $color, $font, $char[$i]);
# Get width of character
$width = imagettfbbox($size, $angle, $font, $char[$i]);
$w = $w + $width[2];
}
}
來源
2016-08-31 09:07:05
ShQ
什麼的foreach'的輸出(陣列( 'GD_VERSION', 'GD_EXTRA_VERSION', 'GD_BUNDLED')爲$ c)中的回波$ C, ':',常數($ c)中, 「\ n」 個; '在兩個版本的PHP? – VolkerK 2010-04-09 19:35:38
GD_VERSION:2.0.35 GD_EXTRA_VERSION:GD_BUNDLED:1 在兩臺服務器上相同。 – 2010-04-10 02:19:20