使用php将嵌套JSON与关系导入MySQL

我正在寻找一种简单的解决方法，将现有的嵌套JSON数据导入几个MySQL表。JSON没有双向关系，所以我认为它们应该自动生成

以下是一个数据示例：

[
    {
        "targetgroup": "Staff",
        "plan": "this field just exists and should be ignored in database",
        "budgetlevel": "Government",
        "spots": 5,
        "edutype": "Bachelor",
        "qualilevel": "Specialist",
        "speciality": "Mathematician",
        "qualification": "Finished",
        "faculty": "Applied mathematics",
        "institute": "this field is sometimes empty in input data",
        "eduform": "Full-time",
        "profiles": [
            "Jr. Arithmetic manager"
        ],
        "entrancetests": [
            {
                "subject": "math",
                "typeoftest": "GOV",
                "minscore": "37",
                "ratingtype": "out of 100"
            },
            {
                "subject": "language",
                "typeoftest": "GOV",
                "minscore": "27",
                "ratingtype": "out of 100"
            },
            {
                "subject": "physics",
                "typeoftest": "GOV",
                "minscore": "40",
                "ratingtype": "out of 100"
            }
        ]
    },
  {
        "targetgroup": "Educational workers",
        "plan": "fridge",
        "budgetlevel": "Legacy",
        "spots": 26,
        "edutype": "Bachelor",
        "qualilevel": "Master",
        "speciality": "Data analysis",
        "qualification": "Finished",
        "faculty": "Machine learning mathematics",
        "institute": "",
        "eduform": "Full-time",
        "profiles": [
            "Head counting manager"
        ],
        "entrancetests": [
            {
                "subject": "Discrete mathematics",
                "typeoftest": "GOV",
                "minscore": "32",
                "ratingtype": "Out of 100"
            },
            {
                "subject": "Algorythm theory",
                "typeoftest": "GOV",
                "minscore": "51",
                "ratingtype": "Out of 100"
            },
            {
                "subject": "Advanced exception catching",
                "typeoftest": "GOV",
                "minscore": "56",
                "ratingtype": "Out of 100"
            }
        ]
    }
]

数据库结构：

表“dep:”

id（自动增量）|目标组|预算级别|点|教育类型。。。etc，与JSON字段名相同

表格“配置文件”

id（相对于相应的父块）|名称

表“入口测试”：

id（相对于相应的父块）|主题|测试类型| minscore |评级类型

---

关于如何导入非嵌套JSON，我有一个大致的想法，但我很难弄清楚如何添加关系，如何在循环中定义父块？提前谢谢。

圣诞快乐，mkrl。我们实际上不应该为任何人编写新代码，我们只是想修复现有的编码尝试。然而，今天我想通过实践来了解更多关于pdo的知识，而你的问题恰好是受益者。下面是一个功能齐全的事务性pdo流程，适用于您的具体情况。我已经在我的服务器上测试了3个与您的结构匹配的MyISAM表。现在，有可能你现在不喜欢pdo；如果没有，我希望我的提议将迫使您尝试一些新的东西，并使您查询数据库的方式现代化

$json='[
    {
        "targetgroup": "Staff",
        "plan": "this field just exists and should be ignored in database",
        "budgetlevel": "Government",
        "spots": 5,
        "edutype": "Bachelor",
        "qualilevel": "Specialist",
        "speciality": "Mathematician",
        "qualification": "Finished",
        "faculty": "Applied mathematics",
        "institute": "this field is sometimes empty in input data",
        "eduform": "Full-time",
        "profiles": [
            "Jr. Arithmetic manager"
        ],
        "entrancetests": [
            {
                "subject": "math",
                "typeoftest": "GOV",
                "minscore": "37",
                "ratingtype": "out of 100"
            },
            {
                "subject": "language",
                "typeoftest": "GOV",
                "minscore": "27",
                "ratingtype": "out of 100"
            },
            {
                "subject": "physics",
                "typeoftest": "GOV",
                "minscore": "40",
                "ratingtype": "out of 100"
            }
        ]
    },
  {
        "targetgroup": "Educational workers",
        "plan": "fridge",
        "budgetlevel": "Legacy",
        "spots": 26,
        "edutype": "Bachelor",
        "qualilevel": "Master",
        "speciality": "Data analysis",
        "qualification": "Finished",
        "faculty": "Machine learning mathematics",
        "institute": "",
        "eduform": "Full-time",
        "profiles": [
            "Head counting manager"
        ],
        "entrancetests": [
            {
                "subject": "Discrete mathematics",
                "typeoftest": "GOV",
                "minscore": "32",
                "ratingtype": "Out of 100"
            },
            {
                "subject": "Algorythm theory",
                "typeoftest": "GOV",
                "minscore": "51",
                "ratingtype": "Out of 100"
            },
            {
                "subject": "Advanced exception catching",
                "typeoftest": "GOV",
                "minscore": "56",
                "ratingtype": "Out of 100"
            }
        ]
    }
]';


$db=new PDO("mysql:host=yourhost;dbname=yourdbname;charset=utf8","username","password");

try{
    $db->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);  // this will deny subsequent queries from being executed if there is an error and permit exception handle at the bottom
    $db->beginTransaction();

    // dep
    $dep_cols=array("targetgroup","budgetlevel","spots",
        "edutype","qualilevel","speciality","qualification",
        "faculty","institute","eduform");  // declare columns
    $dep_keys=array_map(function($v){return ":$v";},$dep_cols);  // build :keys    
    $dep_cols=array_combine($dep_keys,$dep_cols);   // assign :keys
    var_export($dep_cols);
    $dep_query="INSERT INTO `dep` (`".implode('`,`',$dep_cols)."`)"; // list columns as csv
    $dep_query.=" VALUES (".implode(',',array_keys($dep_cols)).");";
    echo "<div>$dep_query</div>";
    $stmt_add_dep=$db->prepare($dep_query);

    // profile
    $profile_cols=array('name');
    $profile_query="INSERT INTO `profile` (`id`,`".implode('`,`',$profile_cols)."`)"; // list columns as csv
    $profile_query.=" VALUES (LAST_INSERT_ID(),".implode(',',array_fill(0,sizeof($profile_cols),"?")).");";
    echo "<div>$profile_query</div>";

    // entrancetests
    $entrance_cols=array('subject','typeoftest','minscore','ratingtype');  // declare columns
    $entrance_keys=array_map(function($v){return ":$v";},$entrance_cols);  // build :keys
    $entrance_cols=array_combine($entrance_keys,$entrance_cols);  // assign :keys    
    var_export($entrance_cols);
    $entrance_query="INSERT INTO `entrancetests` (`id`,`".implode('`,`',$entrance_cols)."`)"; // list columns as csv
    $entrance_query.=" VALUES (LAST_INSERT_ID(),".implode(',',array_keys($entrance_cols)).");";
    echo "<div>$entrance_query</div>";
    $stmt_add_entrance=$db->prepare($entrance_query);

    foreach(json_decode($json) as $d){
        foreach($dep_cols as $k=>$v){
            $stmt_add_dep->bindValue($k,(property_exists($d,$v)?$d->$v:""));
            echo "<div>$k => {$d->$v}</div>";
        }
        $stmt_add_dep->execute();
        echo "<div>Dep Affected Rows: ",$stmt_add_dep->rowCount(),"</div><br>";

        $stmt_add_profile=$db->prepare($profile_query);
        foreach($d->profiles as $k=>$v){
            $stmt_add_profile->bindValue($k+1,$v);
            echo "<div>",$k+1," => $v</div>";
        }
        $stmt_add_profile->execute();
        echo "<div>Profile Affected Rows: ",$stmt_add_profile->rowCount(),"</div><br>";

        foreach($d->entrancetests as $o){
            foreach($entrance_cols as $k=>$v){
                $stmt_add_entrance->bindValue($k,(property_exists($o,$v)?$o->$v:""));
                echo "<div>$k => {$o->$v}</div>";
            }
        }
        $stmt_add_entrance->execute();
        echo "<div>Entrance Affected Rows: ",$stmt_add_entrance->rowCount(),"</div><br>";
    }

    // $db->commit();  // Only use with InnoDB tables.  MyISAM is auto-commit

}
catch(PDOException $e){
    // $db->rollBack();  // Only works if InnoDB table.  If MyISAM table, it doesn't rollback.
    echo "Error message: {$e->getMessage()}. File: {$e->getFile()}. Line: {$e->getLine()}";
    // do not show these error messages to users when you go live
}

$json=”[
{
“目标集团”：“员工”，
“计划”：“此字段在数据库中仅存在，应忽略”，
“预算级别”：“政府”，
"斑点":五,，
“教育类型”：“学士”，
“资格等级”：“专家”，
“专业”：“数学家”，
“资格”：“完成”，
“教员”：“应用数学”，
“institute”：“此字段在输入数据中有时为空”，
“教育形式”：“全职”，
“概况”：[
“小算术经理”
],
“入学考试”：[
{
“科目”：“数学”，
“测试类型”：“GOV”，
“minscore”：“37”，
“评级类型”：“100分之一”
},
{
“主题”：“语言”，
“测试类型”：“GOV”，
“minscore”：“27”，
“评级类型”：“100分之一”
},
{
“主题”：“物理学”，
“测试类型”：“GOV”，
“minscore”：“40”，
“评级类型”：“100分之一”
}
]
},
{
“目标群体”：“教育工作者”，
“计划”：“冰箱”，
“预算级别”：“遗产”，
“斑点”：26，
“教育类型”：“学士”，
“资格等级”：“大师级”，
“专业”：“数据分析”，
“资格”：“完成”，
“教员”：“机器学习数学”，
“学会”：“学会”，
“教育形式”：“全职”，
“概况”：[
“人头计数经理”
],
“入学考试”：[
{
“主题”：“离散数学”，
“测试类型”：“GOV”，
“minscore”：“32”，
“评级类型”：“100分之一”
},
{
“主题”：“算法理论”，
“测试类型”：“GOV”，
“minscore”：“51”，
“评级类型”：“100分之一”
},
{
“主题”：“高级异常捕获”，
“测试类型”：“GOV”，
“minscore”：“56”，
“评级类型”：“100分之一”
}
]
}
]';
$db=newpdo（“mysql:host=yourhost；dbname=yourdbname；charset=utf8”、“用户名”、“密码”）；
试一试{
$db->setAttribute（PDO:：ATTR_ERRMODE，PDO:：ERRMODE_EXCEPTION）；//如果出现错误，将拒绝执行后续查询，并允许在底部执行异常句柄
$db->beginTransaction（）；
//副署长
$dep_cols=数组（“目标组”、“预算级别”、“点”，
“教育类型”、“资格等级”、“专业”、“资格”，
“教员”、“学院”、“教育形式”）；//声明列
$dep_keys=array_map（函数（$v）{return:$v”；}，$dep_cols）；//构建：keys
$dep_cols=array_combine（$dep_keys，$dep_cols）；//分配：keys
var_出口（$dep_cols）；
$dep_query=“插入到`dep`（`）.introde（`，`，$dep_cols）。“`”；//将列列列为csv
$dep_query.=“值（“.introde（'，”，数组键（$dep_cols））”；
回显“$dep_query”；
$stmt\u add\u dep=$db->prepare（$dep\u query）；
//侧面图
$profile_cols=数组（'name'）；
$profile_query=“INSERT INTO`profile`（`id`，`）。内爆（`，`，$profile_cols）。“`）”；//将列列列为csv
$profile\U query.=“值（最后一个插入的ID（），”。内爆（“，”，数组填充（0，sizeof（$profile\U cols），“？”））；”；
回显“$profile_query”；
//入学考试
$entrance\u cols=array（'subject'，'typeoftest'，'minscore'，'ratingtype'）；//声明列
$entrance\u keys=array\u map（函数（$v）{return:$v”；}，$entrance\u cols）；//构建：键
$entrance\u cols=array\u combine（$entrance\u keys，$entrance\u cols）；//分配：keys
var_出口（进口成本）；
$entrance\u query=“插入到`entrantests`（`id`，`）。内爆（`，`，$entrance\u cols）。“`）；//将列列作为csv列出
$entrance\u query.=“值（最后一次插入\u ID（），”.内爆（“，”，数组\u键（$entrance\u cols））”；”；
回显“$entrance\u query”；
$stmt\u add\u entrance=$db->prepare（$entrance\u query）；
foreach（json_解码（$json）为$d）{
foreach（$k=>v）{
$stmt_add_dep->bindValue（$k，（属性_存在（$d，$v）？$d->$v:）；
回显“$k=>{$d->$v}”；
}
$stmt_add_dep->execute（）；
echo“Dep受影响的行：”，$stmt\u add\u Dep->rowCount（），“
”；
$stmt\u add\u profile=$db->prepare（$profile\u query）；
foreach（$d->profiles as$k=>v）{
$stmt\u add\u profile->bindValue（$k+1，$v）；
回声“$k+1”，=>$v”；
}
$stmt\u添加\u profi