php的静态方法调用问题,求大牛解答
<br /><br /><?php<br />class Cat {<br />}<br />class Hypnotic_Cat extends Cat {<br />// Constructor<br /> function Hypnotic_Cat( ) {<br /> }<br />// This function must be called statically<br /> public static function hypnotize( ) {<br /> echo ("The cat was hypnotized.");<br /> //return;<br /> }<br />}<br />// Hypnotize all cats<br />//Hypnotic_Cat::hypnotize( );<br />$hypnotic_cat = new Hypnotic_Cat( );<br />// Does nothing<br />$hypnotic_cat->hypnotize( );<br />?><br />