lain posted

PHP : concat problem


for($i=0;$i<=$page;$i++){ 
	if(!isset($_REQUEST['query'])){
			$page_Link="?query=".$i+1;
	}else {
			$page_Link="/query/".$i+1;
      }
 echo $page_Link;
}

echo $page_link should be ?page=1 or /page/1 but it retrun only 1

why concatenating in PHP not working well ?

Edit Question

Phpworker
answered Nov 30 '-1 00:00

Solution is


$page_Link="/page/".($i+1);

() make separate run of arithmetical operation and concatenation.

its problem type conversation .

if you do


$d="r"+1;

it return 1

why it is return 1 in auto type conversation with integer?

here + sign make it mathematical operation instead of concat


"r"+1 = intval("r")+1

intval("r") or intval("anystring") = 0 so 0+1=1

so solution is make separate run for $i+1 and concatenation .
so surround () it with so it run first and than it merged with string with (.) operation in PHP

Edit Answer

lain posted

PHP : concat problem

Phpworker answered Nov 30 '-1 00:00

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Phpworker
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