PHP SqlParser UtfString::getCharLength Examples

getCharLength() public static method

According to RFC 3629, a UTF-8 character can have at most 4 bytes. However, this implementation supports UTF-8 characters containing up to 6 bytes.

See also: https://tools.ietf.org/html/rfc3629

public static getCharLength ( string $byte ) : integer
$byte	string	The byte to be analyzed.
return	integer

Example #1

File: UtfStringTest.php Project: elrossco22/sql-parser

 public function testGetCharLength()
 {
     $this->assertEquals(1, UtfString::getCharLength(chr(0x0)));
     // 00000000
     $this->assertEquals(1, UtfString::getCharLength(chr(0x7f)));
     // 01111111
     $this->assertEquals(2, UtfString::getCharLength(chr(0xc0)));
     // 11000000
     $this->assertEquals(2, UtfString::getCharLength(chr(0xdf)));
     // 11011111
     $this->assertEquals(3, UtfString::getCharLength(chr(0xe0)));
     // 11100000
     $this->assertEquals(3, UtfString::getCharLength(chr(0xef)));
     // 11101111
     $this->assertEquals(4, UtfString::getCharLength(chr(0xf0)));
     // 11110000
     $this->assertEquals(4, UtfString::getCharLength(chr(0xf7)));
     // 11110111
     $this->assertEquals(5, UtfString::getCharLength(chr(0xf8)));
     // 11111000
     $this->assertEquals(5, UtfString::getCharLength(chr(0xfb)));
     // 11111011
     $this->assertEquals(6, UtfString::getCharLength(chr(0xfc)));
     // 11111100
     $this->assertEquals(6, UtfString::getCharLength(chr(0xfd)));
     // 11111101
 }