public function testIsAlphaNumber() { $this->assertTrue($this->phoneUtil->isAlphaNumber("1800 six-flags")); $this->assertTrue($this->phoneUtil->isAlphaNumber("1800 six-flags ext. 1234")); $this->assertTrue($this->phoneUtil->isAlphaNumber("+800 six-flags")); $this->assertFalse($this->phoneUtil->isAlphaNumber("1800 123-1234")); $this->assertFalse($this->phoneUtil->isAlphaNumber("1800 123-1234 extension: 1234")); $this->assertFalse($this->phoneUtil->isAlphaNumber("+800 1234-1234")); }