the boolean false itselfthe integer 0 (zero)the float 0.0 (zero)the empty string, and the string 0an array with zero elementsan object with zero member variables (php 4 only)the special type null (including unset variables)simplexml objects created from empty tags其他为true
以上就介绍了php中各类型数据转换为bool型时为false的总结，包括了方面的内容，希望对php教程有兴趣的朋友有所帮助。