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<?php
$image_width = 100; $image_height = 100; $image_str =
‘‘
;
if (isset(
$_GET
[
‘w‘
])) {
$image_width =
intval
(
$_GET
[
‘w‘
]); }
if (isset(
$_GET
[
‘h‘
])) {
$image_height =
intval
(
$_GET
[
‘h‘
]); }
if (isset(
$_GET
[
‘s‘
])) {
$image_str =
$_GET
[
‘s‘
]; }
$img = imagecreate(
$image_width
,
$image_height
); $color = imagecolorallocate(
$img
, mt_rand(157,255), mt_rand(157,255), mt_rand(157,255)); imagefilledrectangle(
$img
, 0,
$image_height
,
$image_width
, 0,
$color
);
$step = mt_rand(15, 30); $start = mt_rand(0,
$step
); $color = imagecolorallocate(
$img
, mt_rand(200,255), mt_rand(200,255), mt_rand(200,255)); imagesetthickness(
$img
, mt_rand(3, 10));
if (
$image_height >
$image_width
) {
for (
$i
=
$start
;
$i
<
$image_height * 2;
$i
+=
$step
)
{
imageline(
$img
, 0,
$i
,
$i
, 0,
$color
);
} } else {
for (
$i
=
$start
;
$i
<
$image_width * 2;
$i
+=
$step
)
{
imageline(
$img
,
$i
, 0, 0,
$i
,
$color
);
} }
if (
$image_str !=
‘‘
) {
$black = imagecolorallocate(
$img
, 0, 0, 0);
imagestring(
$img
, 12, 5, 5,
$image_str
,
$black
); }
header(
‘Content-type:image/png‘
); imagepng(
$img
); imagedestroy(
$img
);
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