Parameter flattening

src/Query/Query.php

@@ -23,4 +23,41 @@ public function getFilePath():string {
 	}
 
 	abstract public function execute(array $bindings = []):ResultSet;
+
+	/**
+	 * $bindings can either be :
+	 * 1) An array of individual values for binding to the question mark placeholder,
+	 * passed in as variable arguments.
+	 * 2) An array containing subarrays containing key-value-pairs for binding to
+	 * named placeholders.
+	 *
+	 * Due to the use of variable arguments on the Database and QueryCollection classes,
+	 * key-value-pair bindings may be double or triple nested at this point.
+	 */
+	protected function flattenBindings(array $bindings):array {
+		if(!isset($bindings[0])
+			|| !is_array($bindings[0])) {
+			return $bindings;
+		}
+
+		$flatArray = [];
+		foreach($bindings as $i => $b) {
+			while(isset($b[0])
+			&& is_array($b[0])) {
+				$merged = [];
+				foreach($b as $innerKey => $innerValue) {
+					$merged = array_merge(
+						$merged,
+						$innerValue
+					);
+				}
+
+				$b = $merged;
+			}
+
+			$flatArray = array_merge($flatArray, $b);
+		}
+
+		return $flatArray;
+	}
 }

src/Query/QueryCollectionFactory.php

@@ -45,7 +45,7 @@ public function directoryExists(string $name):bool {
 	 * @param  string $name Name of the QueryCollection
 	 * @return string       Absolute path to directory
 	 */
-	protected function locateDirectory(string $name)/* :?string */ {
+	protected function locateDirectory(string $name):?string {
 		foreach(new DirectoryIterator($this->basePath) as $fileInfo) {
 			if($fileInfo->isDot()
 				|| !$fileInfo->isDir()) {

src/Query/SqlQuery.php

@@ -126,34 +126,8 @@ protected function removeUnusedBindings(array $bindings, string $sql):array {
 	protected function bindingsEmptyOrNonAssociative(array $bindings):bool {
 		return
 			$bindings === []
-			|| array_keys($bindings) === range(0, count($bindings) - 1);
-	}
-
-	/**
-	 * $bindings can either be :
-	 * 1) An array of individual values for binding to the question mark placeholder,
-	 * passed in as variable arguments.
-	 * 2) An array containing one single subarray containing key-value-pairs for binding to
-	 * named placeholders.
-	 *
-	 * Due to the use of variable arguments on the Database and QueryCollection classes,
-	 * key-value-pair bindings may be double or triple nested.
-	 */
-	protected function flattenBindings(array $bindings):array {
-		if(!isset($bindings[0])) {
-			return $bindings;
-		}
-
-		$flatArray = [];
-		foreach($bindings as $i => $b) {
-			while(isset($b[0])
-			&& is_array($b[0])) {
-				$b = $b[0];
-			}
-
-			$flatArray = array_merge($flatArray, $b);
-		}
-
-		return $flatArray;
+			|| array_keys($bindings) === range(
+				0,
+				count($bindings) - 1);
 	}
 }

test/unit/IntegrationTest.php

@@ -130,13 +130,39 @@ public function testMultipleParameterUsage() {
 			"number" => 55,
 		]);
 
-		$rqr = $this->db->executeSql("SELECT id, name FROM test_table");
-
 		static::assertEquals(1, $result1->id);
 		static::assertEquals(2, $result2->id);
 		static::assertNull($resultNull);
 	}
 
+	public function testMultipleArrayParameterUsage() {
+		$queryCollectionPath = $this->queryBase . "/exampleCollection";
+		$getByNameNumberQueryPath = $queryCollectionPath . "/getByNameNumber.sql";
+
+		mkdir($queryCollectionPath, 0775, true);
+		file_put_contents(
+			$getByNameNumberQueryPath,
+			"SELECT id, name, number FROM test_table WHERE name = :name and number = :number"
+		);
+
+		$result1 = $this->db->fetch("exampleCollection/getByNameNumber", [
+			"name" => "one",
+			"number" => 1,
+		]);
+		$result2 = $this->db->fetch("exampleCollection/getByNameNumber",
+			[	"name" => "two"] ,
+			["number" => 2]
+		);
+		$result3 = $this->db->fetch("exampleCollection/getByNameNumber", [
+			["name" => "three"],
+			["number" => 3],
+		]);
+
+		static::assertEquals(1, $result1->id);
+		static::assertEquals(2, $result2->id);
+		static::assertEquals(3, $result3->id);
+	}
+
 	private function settingsSingleton():Settings {
 		if(is_null($this->settings)) {
 			$this->settings = new Settings(