[Console] Better error handling when misuse of ArgvInput with arrays

Author: symfonyaml

Input/ArgvInput.php

@@ -49,6 +49,12 @@ public function __construct(?array $argv = null, ?InputDefinition $definition =
     {
         $argv ??= $_SERVER['argv'] ?? [];
 
+        foreach ($argv as $arg) {
+            if (!\is_scalar($arg) && !$arg instanceof \Stringable) {
+                throw new RuntimeException(sprintf('Argument values expected to be all scalars, got "%s".', get_debug_type($arg)));
+            }
+        }
+
         // strip the application name
         array_shift($argv);
 

Tests/Input/ArgvInputTest.php

@@ -324,6 +324,11 @@ public static function provideInvalidInput(): array
                 new InputDefinition([new InputArgument('name', InputArgument::REQUIRED)]),
                 'Too many arguments, expected arguments "name".',
             ],
+            [
+                ['cli.php', ['array']],
+                new InputDefinition(),
+                'Argument values expected to be all scalars, got "array".',
+            ],
         ];
     }