Existing Site ZIP Codes are entered correctly.
';
$validInput = false;
break;
}
}
unset($existingSite); //must destroy the reference to the last element
} else
$existingSites = array(); //make it an empty array
//validate candidate sites
if(strlen($candidateSites)) {
$candidateSites = explode("\n", $candidateSites);
foreach($candidateSites as &$candidateSite) {
$candidateSite = filter_var($candidateSite, FILTER_SANITIZE_NUMBER_INT);
if(!$candidateSite) {
$error .= 'Please ensure the Candidate Site ZIP Codes are entered correctly.
';
$validInput = false;
break;
}
}
unset($candidateSite); //must destroy the reference to the last element
$candidateSites = array_unique($candidateSites); //we don't need or want duplicates
} else
$candidateSites = array(); //make it an empty array
//validate state
$state = filter_var($state, FILTER_SANITIZE_STRING);
if(is_null($state) || strlen($state) == 0 || $state === 'MULTI-STATE') {
$error .= 'Please ensure the State is chosen correctly.
';
$validInput = false;
}
//validate algorithm
$algorithm = filter_var($algorithm, FILTER_SANITIZE_STRING);
if(is_null($algorithm) || strlen($algorithm) == 0 || !($algorithm === 'MAXIMAL_COVERAGE_MODEL' || $algorithm === 'KMEDIAN')) {
$error .= 'Please ensure the Algorithm is chosen correctly.
';
$validInput = false;
}
//validate number of sites
$numSites = filter_var($numSites, FILTER_SANITIZE_NUMBER_INT);
if(is_null($numSites) || (is_bool($numSites) && !$numSites)) {
$error .= 'Please ensure the Number of Candidate Sites to Find is entered correctly.
';
$validInput = false;
} else if($numSites < 0 || $numSites > count($candidateSites)) {
$error .= 'The Number of Candidate Sites to Find must be between 0 and the number of candidate sites entered in the Candidate Site ZIP Codes box.
';
$error .= '→ You entered ' . count($candidateSites) . ' unique candidate site ZIP codes.
';
$error .= "→ You entered $numSites for the number of candidate sites to find.
";
$error .= "→ This algorithm only considers unique ZIP codes.
";
$validInput = false;
}
//validate radius
$radius = filter_var($radius, FILTER_SANITIZE_NUMBER_INT);
if(is_null($radius) || (is_bool($radius) && !$radius)) {
$error .= 'Please ensure the Radius of Coverage is entered correctly.
';
$validInput = false;
} else if($radius <= 0) {
$error .= 'The Radius of Coverage must be greater than 0.
';
$error .= "→ You entered a radius of coverage of $radius miles.
";
$validInput = false;
}
?>