echo isset php
Determineifavariableisconsideredset,thismeansifavariableisdeclaredandisdifferentthannull.Ifavariablehasbeenunsetwiththeunset() ...,2015年9月10日—Useasimpleifstatement:if(isset($total_record)&&$total_record>0)echo$total_record.numberofourAgentsiny...
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Theisset()functioncheckswhetheravariableisset,whichmeansthatithastobedeclaredandisnotNULL.Thisfunctionreturnstrueifthevariableexists ...
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