PHP中各类型数据转换为bool型时为false的总结

the boolean FALSE itself

the integer 0 (zero)

the float 0.0 (zero)

the empty string, and the string "0"

an array with zero elements

an 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。