我試圖將數(shù)據(jù)返回到我的變量 $item_id 但變量返回空。我沒(méi)有以正確的方式返回?cái)?shù)據(jù)嗎？？item_id 應(yīng)返回來(lái)自 serverMonitor.php 中的索引函數(shù)的“Alert”。請(qǐng)指教。謝謝項(xiàng)目.php function rest_state() { $id = 1; $item_id = $this->pass_to_res($id); return $item_id //this should return "Alert" }function pass_to_res($id) { $url = "https://example.com/serverMonitor?id=$id"; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET"); $result = curl_exec($ch); curl_close ($ch); return $result; }serverMonitor.php function index() { $id = htmlentities($_GET['id']); $word = "Alert"; return $word; }
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TA貢獻(xiàn)1803條經(jīng)驗(yàn) 獲得超3個(gè)贊
函數(shù)的返回值并不總是對(duì)訪問(wèn)者可見(jiàn)。您應(yīng)該使用 echo、print 或 print_r。
function index() {
$id = htmlentities($_GET['id']);
$word = "Alert";
echo $word;
return true;
}
你也可以使用 JSON with json_encode 來(lái)編碼
function index() {
$id = htmlentities($_GET['id']);
$word = "Alert";
echo json_encode(['word' => $word]);
return true;
}
和 json_decode 解碼：
function pass_to_res($id)
{
$url = "https://example.com/serverMonitor?id=$id";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
$result = curl_exec($ch);
curl_close ($ch);
$result = json_decode($result);
return isset($result['word']) ? $result['word'] : false;
}
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