°ª |
if($var) |
isset |
empty |
is_null |
$var1 =1 |
TRUE |
TRUE |
FALSE |
FALSE |
$var=""; |
FALSE |
TRUE |
TRUE |
FALSE |
$var="0"; |
FALSE |
TRUE |
TRUE |
FALSE |
$var=0; |
FALSE |
TRUE |
TRUE |
FALSE |
$var=NULL; |
FALSE |
FALSE |
TRUE |
TRUE |
$var |
FALSE |
FALSE |
TRUE |
TRUE |
$var=array() |
FALSE |
TRUE |
TRUE |
FALSE |
$var=array(1) |
TRUE |
TRUE |
FALSE |
FALSE |
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