public function testImBorder()
{
$tests = array("100x200 -> 1 = 102x202", "100x200 -> 2 = 104x204");
foreach ($tests as $test) {
preg_match("~(?P<sw>\\d+)x(?P<sh>\\d+) -> (?P<border>\\S+) = (?P<dw>\\d+)x(?P<dh>\\d+)~", $test, $m);
$im = imagecreate($m['sw'], $m['sh']);
$backgroundColor = imagecolorallocate($im, 0, 0, 0);
$tmp = rtrim(`mktemp`);
imagepng($im, $tmp);
$target = imBorder($tmp, ['border' => $m['border'], 'dir' => sys_get_temp_dir(), 'log' => true, 'overwrite' => true]);
$this->assertTrue(is_file($target));
list($w, $h) = getimagesize($target);
$this->assertEquals($w, $m['dw']);
$this->assertEquals($h, $m['dh']);
}
}
function imCaptcha($settings = array())
{
$width = isset($settings['width']) ? $settings['width'] : null;
$height = isset($settings['height']) ? $settings['height'] : 50;
$length = isset($settings['length']) ? $settings['length'] : 6;
$padding = isset($settings['padding']) ? $settings['padding'] : 4;
$padding = intval($padding) > 0 ? intval($padding) : 4;
$length = intval($length) > 0 ? intval($length) : 6;
$height = intval($height) > 0 ? intval($height) : 50;
$paddingLR = $padding;
$paddingTB = $padding;
$size = $height - 2 * $padding;
$fonts = glob(__DIR__ . "/fonts/*.ttf");
if (!$fonts) {
return array();
}
$font = $fonts[mt_rand(0, count($fonts) - 1)];
$box = imagettfbbox($size, 0, $font, "H");
$_width = abs($box[2] - $box[0]);
$_shift = abs($box[6] - $box[0]);
$_height = abs($box[7] - $box[1]);
//
if (!$width) {
$width = $length * $_width + ($length + 1) * $padding + $_shift;
}
//
$image = imagecreatetruecolor($width, $height);
if (!$image) {
return array();
}
$letters = 'ABCDEFGHJKMNPRSTUVWXYZ';
// no "I", "L", "O", "Q"
$backgroundColor = imagecolorallocate($image, 255, 255, 255);
$lineColor = imagecolorallocate($image, 64, 64, 64);
$pixelColor = imagecolorallocate($image, 0, 0, 255);
$textColor = imagecolorallocate($image, 0, 0, 0);
imagefilledrectangle($image, 0, 0, $width, $height, $backgroundColor);
// 3 lines
imageline($image, 0, mt_rand() % $height, $width, mt_rand() % $height, $lineColor);
imageline($image, 0, mt_rand() % $height, $width, mt_rand() % $height, $lineColor);
imageline($image, 0, mt_rand() % $height, $width, mt_rand() % $height, $lineColor);
// add noise
for ($i = 0; $i < 500; $i++) {
imagesetpixel($image, mt_rand() % $width, mt_rand() % $height, $pixelColor);
}
$len = strlen($letters);
$word = "";
for ($i = 0; $i < $length; $i++) {
$letter = $letters[mt_rand(0, $len - 1)];
$angle = -5 + mt_rand(0, 10);
imagettftext($image, $size, $angle, $i * ($padding + $_width) + $padding, $padding + $_height, $textColor, $font, $letter);
$word .= $letter;
}
$file = rtrim(`mktemp --suffix=.png`);
imagepng($image, $file);
imagedestroy($image);
$imBorder = array();
if (isset($settings['borderColor'])) {
$imBorder['borderColor'] = $settings['borderColor'];
}
if (isset($settings['border'])) {
$imBorder['border'] = $settings['border'];
}
$file = imBorder($file, $imBorder);
if (!$file) {
return array();
}
return array('file' => $file, 'word' => $word);
}