guestget.php

<?php

$dataFile = 'cc.dat';

$userhouse1 = $_GET['userhouse1'];
$stay1 = $_GET['stay1'];
$stay2 = $_GET['stay2'];


$fp   = fopen($dataFile, "r");
while (($dataRow = fgetcsv($fp, 0, ",")) !== FALSE) {
    $dataArray1[] = $dataRow;
}
fclose($fp);  

$rightData = array();
foreach ($dataArray1 as $eachData1){
// dataArray1:[0]神楽坂	 [1]Jon　[2]4　[3]2015-02-01 [4]2015-02-15みたいな各配列
// eachData1[0]:ex 神楽坂	
// eachData1[1]:ex Jon
// eachData1[2]:ex 4
// eachData1[3]:2015-02-01
// eachData1[4]:201-02-15
if(
	$eachData1[0] == $userhouse1 &&
	$eachData1[3] == $stay1 && 
	$eachData1[4] == $stay2 && 
	){$rightData = $eachData1;
}
}
if(
	$rightData[1] == null or
	$rightData[2] == null or
	$rightData[3] == null or
	$rightData[4] == null
	){
	$rightData[1] = "";
	$rightData[2] = "";
	$rightData[3] = "";
	$rightData[4] = "";
}

$response = array(
	'guestname' => $rightData[1],
	'people' => $rightData[2],
	'stay1' => $rightData[3],
	'stay2' => $rightData[4]
	);

echo json_encode($response);