php converting to boolean
- WBOY原創
- 2016-06-23 14:36:101005瀏覽
When converting to boolean, the following values are considered FALSE:
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 tagsEvery other value is considered TRUE (including any resource).
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