Question

函数saveImagePath没有＆＃39;当它在主函数uploadFile内时工作。但是文件成功上传。上传没有问题。它是关于这个嵌套函数的全部内容。当我执行以下代码时，除了这个`saveImagePath＆＃39;功能

为了验证这一点，我编写了导致主函数外部嵌套函数的问题，并使用$this->saveImagePath和Lo调用它！有效。这背后的问题是什么？

是否与return语句有关？

function uploadFile($fields){
        $files = $_FILES['photo'];
        $count = count($files['name']);
        if($fields['type'] == "PROFILEPIC"){
            $folderName="userimages/";
        }else{
            $folderName="personalmarkerimages/";
            $transportStopId=$fields['transportStopId'];
        }

        function saveImagePath($imagePath, $transportStopId)
        {
            $db=$this->dbConnect();
            $mySqlQuery = "UPDATE mytablename SET imagePath=:imagePath WHERE filedname=:stopId";
            $stmt=$db->prepare($mySqlQuery);
            $stmt->bindParam("imagePath", $imagePath);
            $stmt->bindParam("stopId", $transportStopId);
            $stmt->execute();
        }

        if(gettype($files['name'])=='array'){
            $num=0;
            for($i = 0 ; $i < $count ; $i++) {
                if ($files['error'][$i] === 0) {
                    $target_file='/myaddress/' . $folderName . $files['name'][$i];
                    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
                    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" ) {
                        echo '{"status": "error", "message": "Not a valid format"}';
                    }else{
                        if (file_exists($target_file)) {
                            echo '{"status": "error", "message": "File already exist"}';
                            break;
                        }else if(move_uploaded_file($files['tmp_name'][$i], $target_file) === true) {
                            saveImagePath($target_file, $transportStopId);
                                $num=$i+1;
                        }
                        else{

                        }
                    }
                }
            }
        }else{
            echo '{"status": "error", "message": "Couldn\'t upload"}';
        }

        if($num==$count){
            echo '{"status": "success", "values": "'.$fields['description'].'"}';
        }
    }

Answer 1

函数中的函数看起来像是一个类，所以我已经将代码更改为类：

class FileUploader {
    public function uploadFile($fields){
        $files = $_FILES[ 'photo' ];
        $count = count( $files[ 'name' ] );
        if ( $fields[ 'type' ] == "PROFILEPIC" ) {
            $folderName = "userimages/";
        } else {
            $folderName = "personalmarkerimages/";
            $transportStopId = $fields[ 'transportStopId' ];
        }

        if(gettype($files['name'])=='array'){
            $num=0;
            for($i = 0 ; $i < $count ; $i++) {
                if ($files['error'][$i] === 0) {
                    $target_file='/myaddress/' . $folderName . $files['name'][$i];
                    $imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
                    if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg" && $imageFileType != "gif" ) {
                        echo '{"status": "error", "message": "Not a valid format"}';
                    }else{
                        if (file_exists($target_file)) {
                            echo '{"status": "error", "message": "File already exist"}';
                            break;
                        }else if(move_uploaded_file($files['tmp_name'][$i], $target_file) === true) {
                            $this->saveImagePath($target_file, $transportStopId);
                            $num=$i+1;
                        }
                        else{

                        }
                    }
                }
            }
        }else{
            echo '{"status": "error", "message": "Couldn\'t upload"}';
        }

        if($num==$count){
            echo '{"status": "success", "values": "'.$fields['description'].'"}';
        }
    }

    protected function saveImagePath($imagePath, $transportStopId)
    {
        $db=$this->dbConnect();
        $mySqlQuery = "UPDATE mytablename SET imagePath=:imagePath WHERE filedname=:stopId";
        $stmt=$db->prepare($mySqlQuery);
        $stmt->bindParam("imagePath", $imagePath);
        $stmt->bindParam("stopId", $transportStopId);
        $stmt->execute();
    }
}

现在您可以使用它：

(new FileUploader())->uploadFile($fields);

为什么在父函数内写入时函数不会执行？

1 个答案: