# 147
# 193
# ...
#
$name = get_parameter("name");
$gender = get_parameter("gender");
# search the input file for the line about the given name/gender
$matching_line = "";
$lines = file("rank.txt", FILE_IGNORE_NEW_LINES);
foreach ($lines as $line) {
if (preg_match("/^$name $gender /", $line)) {
$matching_line = $line;
break;
}
}
if ($matching_line) {
$json = generate_json($line, $name, $gender);
header("Content-type: application/json");
print json_encode($json);
} else {
# this person/gender was not found; issue HTTP error 410
header("HTTP/1.1 410 Gone");
die("HTTP/1.1 410 Gone - There is no data for this name/gender.");
}
# Creates and returns JSON representation for the given line of data.
# for the data, "Aaron m 147 193 187 199 250 237 230 178 52 34 34 41 55",
# would produce the following JSON:
#{
# "name": "Morgan",
# "gender": "m",
# "rankings": [375, 410, 392, 478, 579, 507, 636, 499, 446, 291, 278, 332, 518]
#}
function generate_json($line, $name, $gender) {
# Aaron m 147 193 187 199 250 237 230 178 52 34 34 41 55
$year = 1890;
$tokens = explode(" ", $line);
$data = array(
"name" => $name,
"gender" => $gender,
"rankings" => array_map('intval',array_slice($tokens, 2))
);
return $data;
}
# Returns the value of the given query parameter.
# If the parameter has not been passed, issues an HTTP 400 error.
function get_parameter($name) {
if (isset($_GET[$name])) {
return $_GET[$name];
} else {
header("HTTP/1.1 400 Invalid Request");
die("HTTP/1.1 400 Invalid Request - you forgot to pass a '$name' parameter.");
}
}
?>