36 lines
681 B
PHP
36 lines
681 B
PHP
<?php
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$px = isset($_GET['px']) ? $_GET['px'] : 0;
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$px = preg_replace('/[^0-9]/isU', '', $px);
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$py = isset($_GET['py']) ? $_GET['py'] : 0;
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$py = preg_replace('/[^0-9]/isU', '', $py);
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if ($px<1) {
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$px = 5;
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}
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if ($py<1) {
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$py = 5;
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}
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if ($px>20) {
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$px = 20;
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}
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if ($py>20) {
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$py = 20;
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}
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$width = 100;
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$height = 100;
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$im = imagecreatetruecolor($width, $height);
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for ($y=0; $y<$height; $y+= $py) {
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for ($x=0; $x<$width; $x+= $px) {
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$c = imagecolorallocate($im, 200-$x, 100+$y, 100+$x-$y);
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imagefilledrectangle($im, $x, $y, $x+$px, $y+$py, $c);
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}
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}
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header("Content-type: image/png");
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imagepng($im);
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imagedestroy($im);
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