add warning if values are too low (#764)

app/ControllerFunctions/Diagnostics/IniSettingsCheck.php

@@ -6,15 +6,49 @@
 
 class IniSettingsCheck implements DiagnosticCheckInterface
 {
+	/**
+	 * Return true if the upload_max_filesize is bellow what we want.
+	 */
+	private function convert_size(string $size): int
+	{
+		$size = trim($size);
+		$last = strtolower($size[strlen($size) - 1]);
+		$size = intval($size);
+
+		switch ($last) {
+			case 'g':
+				$size *= 1024;
+				// no break
+			case 'm':
+				$size *= 1024;
+				// no break
+			case 'k':
+				$size *= 1024;
+		}
+
+		return $size;
+	}
+
 	public function check(array &$errors): void
 	{
 		// Check php.ini Settings
 		// Load settings
 		$settings = Configs::get();
 
 		if (
-			ini_get('max_execution_time') < 200
-			&& ini_set('upload_max_filesize', '20M') === false
+			$this->convert_size(ini_get('upload_max_filesize')) < $this->convert_size('30M')
+		) {
+			$errors[]
+				= 'Warning: You may experience problems when uploading a photo of large size. Take a look in the FAQ for details.';
+		}
+		if (
+			$this->convert_size(ini_get('post_max_size')) < $this->convert_size('100M')
+		) {
+			$errors[]
+				= 'Warning: You may experience problems when uploading a photos of large size. Take a look in the FAQ for details.';
+		}
+		if (
+			intval(ini_get('max_execution_time')) < 200
 		) {
 			$errors[]
 				= 'Warning: You may experience problems when uploading a large amount of photos. Take a look in the FAQ for details.';