Question

我收到此错误，在我的一台服务器上使用php 5.4运行正常我将代码转移到一台新的服务器，使用php 5.5.9，现在我收到此错误：

详细

类型：ErrorException 代码：8 消息：未定义的变量：propertylist 文件：/var/www/subdomains/api/index.php 行：57 微量

代码：

$app->get("/propertylist/", function () use ($app, $db) {
$app->response()->header("Content-Type", "application/json");
ob_start('ob_gzhandler');
$req = $app->request();
$bed = $req->get('bed');
$bath = $req->get('bath');
$city = $req->get('city');
$zip = $req->get('zip');
if($bed ==''){$bed=0;}
if($bath ==''){$bath=0;}
if($zip ==''){
$properties = $db->rets_property_listing_mrmls_resi->limit(2500,0)->where("Bedrooms >= ?", $bed)->where("City LIKE ?", "%$city%")->where("BathsTotal >= ?", $bath);
}else{
$properties = $db->rets_property_listing_mrmls_resi->limit(2500,0)->where("Bedrooms >= ?", $bed)->where("ZipCode LIKE ?", "%$zip%")->where("BathsTotal >= ?", $bath);
}
foreach ($properties as $property) {
    $propertylist[] = array(
        "MLSnumber" => $property["MLnumber"],
        "ListPrice" => number_format($property["ListPrice"]),
        "StreetNumber" => $property["StreetNumber"],
        "StreetName" => $property["StreetName"],
        "SqFt" => $property["SquareFootageStructure"],
        "PropertyDescription" => summaryMode($property["PropertyDescription"],15),
        "Bedrooms" => $property["Bedrooms"],
        "BathsTotal" => $property["BathsTotal"],
        "LO_Name" => $property["LO_Name"]
        );
}
echo json_encode($propertylist);
});

Answer 1

使用前需要创建/定义变量：

$app->get("/propertylist/", function () use ($app, $db) {
$app->response()->header("Content-Type", "application/json");
ob_start('ob_gzhandler');
$req = $app->request();
$bed = $req->get('bed');
$bath = $req->get('bath');
$city = $req->get('city');
$zip = $req->get('zip');
if($bed ==''){$bed=0;}
if($bath ==''){$bath=0;}
if($zip ==''){
$properties = $db->rets_property_listing_mrmls_resi->limit(2500,0)->where("Bedrooms >= ?", $bed)->where("City LIKE ?", "%$city%")->where("BathsTotal >= ?", $bath);
}else{
$properties = $db->rets_property_listing_mrmls_resi->limit(2500,0)->where("Bedrooms >= ?", $bed)->where("ZipCode LIKE ?", "%$zip%")->where("BathsTotal >= ?", $bath);
}

$propertylist = array(); //Create variable type array

foreach ($properties as $property) {
    $propertylist[] = array(
        "MLSnumber" => $property["MLnumber"],
        "ListPrice" => number_format($property["ListPrice"]),
        "StreetNumber" => $property["StreetNumber"],
        "StreetName" => $property["StreetName"],
        "SqFt" => $property["SquareFootageStructure"],
        "PropertyDescription" => summaryMode($property["PropertyDescription"],15),
        "Bedrooms" => $property["Bedrooms"],
        "BathsTotal" => $property["BathsTotal"],
        "LO_Name" => $property["LO_Name"]
        );
}
echo json_encode($propertylist);
});

Answer 2

我认为那个版本的PHP只是改变了变量的范围，现在它更像你期望的其他语言。如果在块中定义/创建变量，则在外部作用域中不可见。

在您的情况下，$propertylist直接在foreach块范围内定义，因此对其余代码不可见，从而导致错误。

正如@Guilherme Nascimento建议的那样，你必须在循环之外定义它这就是说，在PHP中使用变量而不实例化它是完全正常的（但不推荐）：

$var[] = 1;
// => array(1)

未定义的变量Array Slim Application

2 个答案: