 | Overlay Images |  |
Simple little function to generate versions of the image with an overlay in the corner (e.g., tick or a cross).
function addShapeOverlay($sourceImagePath, $shape = 'tick', $color = [0, 200, 0], $sizeFactor = 0.15) {
if (!file_exists($sourceImagePath)) {
return false;
}
// Define cache directory
$cacheDir = './cache/';
if (!is_dir($cacheDir)) {
mkdir($cacheDir, 0777, true);
}
$outputPath = $cacheDir . 'overlay_' . basename($sourceImagePath);
// Load the image
$imageInfo = getimagesize($sourceImagePath);
$width = $imageInfo[0];
$height = $imageInfo[1];
switch ($imageInfo['mime']) {
case 'image/jpeg':
$image = imagecreatefromjpeg($sourceImagePath);
break;
case 'image/png':
$image = imagecreatefrompng($sourceImagePath);
break;
default:
return false;
}
// Define shape size based on the image size
$shapeSize = min($width, $height) * $sizeFactor;
$padding = $shapeSize * 0.2;
$xPosition = $width - ($shapeSize + $padding); // Move to right side
$yPosition = $padding;
// Custom shape color
$shapeColor = imagecolorallocate($image, $color[0], $color[1], $color[2]);
// Draw selected shape
switch ($shape) {
case 'tick':
imageline($image, $xPosition, $yPosition + ($shapeSize * 0.5), $xPosition + ($shapeSize * 0.4), $yPosition + $shapeSize, $shapeColor);
imageline($image, $xPosition + ($shapeSize * 0.4), $yPosition + $shapeSize, $xPosition + $shapeSize, $yPosition, $shapeColor);
break;
case 'cross':
imageline($image, $xPosition, $yPosition, $xPosition + $shapeSize, $yPosition + $shapeSize, $shapeColor);
imageline($image, $xPosition, $yPosition + $shapeSize, $xPosition + $shapeSize, $yPosition, $shapeColor);
break;
case 'question':
imagearc($image, $xPosition + ($shapeSize / 2), $yPosition + ($shapeSize / 2), $shapeSize, $shapeSize, 10, 200, $shapeColor);
imageline($image, $xPosition + ($shapeSize * 0.5), $yPosition + ($shapeSize * 0.8), $xPosition + ($shapeSize * 0.5), $yPosition + $shapeSize, $shapeColor);
break;
case 'star':
$points = [
$xPosition + ($shapeSize * 0.5), $yPosition,
$xPosition + ($shapeSize * 0.6), $yPosition + ($shapeSize * 0.4),
$xPosition + $shapeSize, $yPosition + ($shapeSize * 0.4),
$xPosition + ($shapeSize * 0.7), $yPosition + ($shapeSize * 0.7),
$xPosition + ($shapeSize * 0.8), $yPosition + $shapeSize,
$xPosition + ($shapeSize * 0.5), $yPosition + ($shapeSize * 0.85),
$xPosition + ($shapeSize * 0.2), $yPosition + $shapeSize,
$xPosition + ($shapeSize * 0.3), $yPosition + ($shapeSize * 0.7),
$xPosition, $yPosition + ($shapeSize * 0.4),
$xPosition + ($shapeSize * 0.4), $yPosition + ($shapeSize * 0.4)
];
imagefilledpolygon($image, $points, count($points) / 2, $shapeColor);
break;
}
// Save the modified image
imagepng($image, $outputPath);
imagedestroy($image);
return $outputPath;
}
// Usage Example
$modifiedImage = addShapeOverlay("./cover.jpg", "star", [255, 200, 0], 0.2);
echo "Overlay image saved at: " . $modifiedImage;
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