Warning: Do not use this method for do-your-own formatting - for some regions, the national dialling prefix is used only for certain types of numbers. Use the library's formatting functions to prefix the national prefix when required.
public getNddPrefixForRegion ( string $regionCode, boolean $stripNonDigits ) : string | ||
$regionCode | string | the region that we want to get the dialling prefix for |
$stripNonDigits | boolean | true to strip non-digits from the national dialling prefix |
return | string | the dialling prefix for the region denoted by regionCode |
public function testGetNationalDiallingPrefixForRegion() { $this->assertEquals("1", $this->phoneUtil->getNddPrefixForRegion(RegionCode::US, false)); // Test non-main country to see it gets the national dialling prefix for the main country with // that country calling code. $this->assertEquals("1", $this->phoneUtil->getNddPrefixForRegion(RegionCode::BS, false)); $this->assertEquals("0", $this->phoneUtil->getNddPrefixForRegion(RegionCode::NZ, false)); // Test case with non digit in the national prefix. $this->assertEquals("0~0", $this->phoneUtil->getNddPrefixForRegion(RegionCode::AO, false)); $this->assertEquals("00", $this->phoneUtil->getNddPrefixForRegion(RegionCode::AO, true)); // Test cases with invalid regions. $this->assertNull($this->phoneUtil->getNddPrefixForRegion(null, false)); $this->assertNull($this->phoneUtil->getNddPrefixForRegion(RegionCode::ZZ, false)); $this->assertNull($this->phoneUtil->getNddPrefixForRegion(RegionCode::UN001, false)); // CS is already deprecated so the library doesn't support it. $this->assertNull($this->phoneUtil->getNddPrefixForRegion(RegionCode::CS, false)); }