Checks if the number is a valid vanity (alpha) number such as 800 MICROSOFT. A valid vanity
number will start with at least 3 digits and will have three or more alpha characters. This
does not do region-specific checks - to work out if this number is actually valid for a region,
it should be parsed and methods such as {@link #isPossibleNumberWithReason} and
{@link #isValidNumber} should be used.
| public isAlphaNumber ( string $number ) : boolean | ||
| $number | string | the number that needs to be checked |
| 리턴 | boolean | true if the number is a valid vanity number |
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"));
}