The difference between 0 and null and false and empty in php
- 大家讲道理Original
- 2016-11-08 11:26:361596browse
<?php
$test=0;
if($test==''){
echo '<br />在php中，0即为空'; //被输出
}
if($test===''){
echo '<br />在php中，0即为空'; //不被输出
}
if($test==NULL){
echo '<br />在php中，0即为空'; //被输出
}
if($test===NULL){
echo '<br />在php中，0即为空'; //不被输出
}
if($test==false){
echo '<br />在php中，0即为空'; //被输出
}
if($test===false){
echo '<br />在php中，0即为空'; //不被输出
}
?>Statement：
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