31 lines
620 B
PHP
31 lines
620 B
PHP
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<?php
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function flipImage($image, $vertical, $horizontal) {
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$w = imagesx($image);
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$h = imagesy($image);
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if (!$vertical && !$horizontal) return $image;
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$flipped = imagecreatetruecolor($w, $h);
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imageAlphaBlending($flipped, false);
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imageSaveAlpha($flipped, true);
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if ($vertical) {
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for ($y=0; $y<$h; $y++) {
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imagecopy($flipped, $image, 0, $y, 0, $h - $y - 1, $w, 1);
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}
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}
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if ($horizontal) {
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if ($vertical) {
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$image = $flipped;
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$flipped = imagecreatetruecolor($w, $h);
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}
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for ($x=0; $x<$w; $x++) {
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imagecopy($flipped, $image, $x, 0, $w - $x - 1, 0, 1, $h);
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}
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}
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return $flipped;
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}
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