php - Switch condition evaluates incorrectly on zero -


i trying piece of code this:

$event = 0;  switch ($event) {     case 'content':         echo "/content";         break;     case 'start':         echo "/start";         break;     default :         echo "not available";         break; }

this code prints /content when executed, so... 0 (zero, integer, assigned $event variable) being evaluated 'content'. why?

this happening

0 == 'content'

php tries cast string content integer. since content doesnt equal int, defaults 0.

resulting in:

0 == 0

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