public function testNumbers() { $result = SimpleValidator::numbers("546"); $this->assertEquals(true, $result); $result = SimpleValidator::numbers("5x6"); $this->assertEquals(false, $result); $result = SimpleValidator::numbers("z46"); $this->assertEquals(false, $result); $result = SimpleValidator::numbers("54c"); $this->assertEquals(false, $result); $result = SimpleValidator::numbers("sss"); $this->assertEquals(false, $result); $result = SimpleValidator::numbers("3,111,000"); $this->assertEquals(true, $result); $result = SimpleValidator::numbers("3,029,000,"); $this->assertEquals(false, $result); }