[solved] How to use a variable inside an expression?

[ngrmm]

Which syntax is need for this?
 

// field names: 
// field_1
// field_2
// field_3
// …

for ($i = 1; $i <= 40; $i++) {
	if($page->field_{$i} == 'test') { // this does not work 
		// do stuff
	}
}

 

Edited August 1, 2023 by ngrmm
solved

[BillH]

I think you have to do it like this:

for ($i = 1; $i <= 40; $i++) {
    $fieldname = "field_$i";
	if($page->$fieldname == 'test') {
		// do stuff
	}
}

[ngrmm]

thanks @BillH

[BillH]

It occurs to me that if you want a single expression you could also use:

if($page->get("field_$i") == 'test') { 
   ...