PHP ʖ²ἯTH º󍋼/A Ղ 7. Ѝ ЍϷ·¨ $foo = "0"; // $foo is string (ASCII 48) $foo += 2; // $foo is now an integer (2) $foo = $foo + 1.3; // $foo is now a float (3.3) $foo = 5 + "10 Little Piggies"; // $foo is integer (15) $foo = 5 + "10 Small Pigs"; // $foo is integer (15) ע: ʽשµėԶ¯ת»»АΪĿǰûӐ¶¨ҥ¡£ Ѝǿֆת»» PHP ֐µĀЍǿֆת»»º͠C ֐µķdz£ϱ£ºԚҪת»»µı䁿֮ǰ¼ӉϓÀ¨ºŀ¨ư4µĄ¿±ꀠЍ¡£ $foo = 10; // $foo is an integer $bar = (boolean) $foo; // $bar is a boolean ԊЭµć¿ֆת»»Ӑ£º (float), (double), (real) - ת»»³ɸ¡µ㐍 (array) - ת»»³Ɋÿ©¼¯ (object) - ת»»³ɶԏ󼯐 $foo = (int) $bar; $foo = (int) $bar; $foo = 10; // $foo is an integer $str = "$foo"; // $str is a string $fst = (string) $foo; // $fst is also a string // This prints out that "they are the same" if ($fst === $str) {echo "they are the same";} ת»»ΪջЍ ת»»Ϊ¸¡µ㐍 ת»»Ϊʽש ת»»Ϊ¶ԏ󼯁 ת»»Ϊ׊Դ º󍋼/A ưµ㼯A ±¾΄µµ֐ʹӃµĎ± Ѝ ɏһ¼¶ ±䁿