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The difference between 0 and null and false and empty in php

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Release： 2016-11-08 11:26:36
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在php中，0即为空'; //被输出 } if($test===''){ echo '
在php中，0即为空'; //不被输出 } if($test==NULL){ echo '
在php中，0即为空'; //被输出 } if($test===NULL){ echo '
在php中，0即为空'; //不被输出 } if($test==false){ echo '
在php中，0即为空'; //被输出 } if($test===false){ echo '
在php中，0即为空'; //不被输出 } ?>
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