[RESOLVED] Variable variables $_POST

[elemelas]

Hi guys, quick question

how to do this code:

if(isset($_POST['field1'])) {
	}
	else { 
	$_POST['field1'] = 0;
	}
if(isset($_POST['field2'])) {
	}
	else { 
	$_POST['field2'] = 0;
	}
if(isset($_POST['field3'])) {
	}
	else { 
	$_POST['field3'] = 0;
	}
if(isset($_POST['field4'])) {
	}
	else { 
	$_POST['field4'] = 0;
	}
if(isset($_POST['field5'])) {
	}
	else { 
	$_POST['field5'] = 0;
	}
if(isset($_POST['field6'])) {
	}
	else { 
	$_POST['field6'] = 0;
	}
if(isset($_POST['field7'])) {
	}
	else { 
	$_POST['field7'] = 0;
	}

With the loop 😉 I know is quite simple, I was trying this way:

for ($l = 1; $l <= 7; $l++) {

$field = "_POST['field$l']";

if(isset($$field)) {
	}
	else { 
	$$field = "0";
	}

}

But doesn't work I know it's probably lame 😉 but if someone could give me a solution would be brilliant

Thanks

[johanafm]

for ($l = 1; $l <= 7; $l++) {
	// string concatenation...
	if (isset($_POST['field' . $l]))

[Weedpacket]

Having the fields in an array might make things simpler, but:

for($l=1; $l<=7; $l++)
{
    if(!isset($_POST["field$i"])) $_POST["field$i"] = 0;
}

But an alternative is

$defaults = array('field1'=>0, 'field2'=>0, /*...*/);

$_POST = $_POST+$defaults;

Which has the added advantage that your default values don't all need to be the same.

[elemelas]

Thanks a lot for your help guys.

Both solutions work perfectly.

Cheers