javascript - unexpected behaviour in if statement in php code -

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the console in html file calling php code shows following results when php code executed:

php processing: debug 3: test if: in if

php processing: debug 4: false

however, i'd expect the first console result php processing: debug 3: test if: in else. e.g., seems according console wrong (if) part of if-else statement executed , don't understand why (for simple code)???

any suggestions?

php code:

//test code if($productselected_form[0] == true) {     $response_array['debug3'] = 'test if: in if'; } else {     $response_array['debug3'] = 'test if: in else'; } $response_array['debug4'] = $productselected_form[0];  //send response echo json_encode($response_array); //end test code

javascript code (console.log in ajax call php code):

console.log("php processing: debug 3: "+msg.debug3); console.log("php processing: debug 4: "+msg.debug4);

the problem you're comparing string value boolean evaluate true. should compare string string 

//test code if($productselected_form[0] == 'true')

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