<?php

//------------------------------------
// 定数設定
//------------------------------------
//APIキー
$apiKey = "【取得したAPIキー】";

//検索エンジンID
$searchEngineId = "【取得した検索エンジンID】";

// 検索用URL
$baseUrl = "https://www.googleapis.com/customsearch/v1?";

//取得開始位置
$startNum = 1;

try {
    //--------------------------
    // 検索キーワード取得
    //--------------------------
    //$query = $_POST['q'];
    //$query = $_GET['q'];
    $query = "PHP site:piyopiyocs.blog115.fc2.com";

    //------------------------------------
    // リクエストパラメータ生成
    //------------------------------------
    $paramAry = array(
                    'q' => $query,
                    'key' => $apiKey,
                    'cx' => $searchEngineId,
                    'alt' => 'json',
                    'start' => $startNum
            );
    $param = http_build_query($paramAry);

    //------------------------------------
    // 実行＆結果取得
    //------------------------------------
    $reqUrl = $baseUrl . $param;
    $retJson = @file_get_contents($reqUrl, true);
    if($retJson === false){
        throw new Exception("取得失敗！：" . $http_response_header[0]);
    }

    $ret = json_decode($retJson, true);

    //------------------------------------
    // 結果表示
    //------------------------------------

    //画面表示
    //var_dump($ret);

    //JSON形式でファイル出力
    file_put_contents(dirname(__FILE__) . "/data/ret_" . $startNum . "_" . date('Ymd_His') . ".txt", $retJson);

    //項目を画面表示
    $num = $startNum;
    foreach($ret['items'] as $value){
        echo "順位:" . $num . "<br>\n";
        echo "タイトル:" . $value['title'] . "<br>\n";
        echo "URL:" . $value['link'] . "<br>\n";
        echo "-------------------------------------------------------------------------<br>\n";

        $num++;
    }
} catch (Exception $e) {
    print "エラー：" . $e->getMessage();
}

$retJson = @file_get_contents($reqUrl, true);
if($retJson === false){
    throw new Exception("取得失敗！：" . $http_response_header[0]);
}