improved phpDoc

Author: dg

src/Database/IConventions.php

@@ -17,7 +17,7 @@ interface IConventions
 
 	/**
 	 * Returns primary key for table.
-	 * @return string|array|null
+	 * @return string|string[]|null
 	 */
 	function getPrimary(string $table);
 

src/Database/IStructure.php

@@ -39,7 +39,7 @@ function getColumns(string $table): array;
 
 	/**
 	 * Returns table primary key.
-	 * @return string|array|null
+	 * @return string|string[]|null
 	 */
 	function getPrimaryKey(string $table);
 

src/Database/Structure.php

@@ -56,7 +56,7 @@ public function getColumns(string $table): array
 
 
 	/**
-	 * @return string|array|null
+	 * @return string|string[]|null
 	 */
 	public function getPrimaryKey(string $table)
 	{

src/Database/Table/Selection.php

@@ -37,7 +37,7 @@ class Selection implements \Iterator, IRowContainer, \ArrayAccess, \Countable
 	/** @var string table name */
 	protected $name;
 
-	/** @var string|array|null primary key field name */
+	/** @var string|string[]|null primary key field name */
 	protected $primary;
 
 	/** @var string|bool primary column sequence name, false for autodetection */
@@ -115,7 +115,7 @@ public function getName(): string
 
 
 	/**
-	 * @return string|array|null
+	 * @return string|string[]|null
 	 */
 	public function getPrimary(bool $throw = true)
 	{