[英]Json data getting read but not inserting into mysql using php
我正在嘗試使用php將json數據插入mysql,
我得到了成功的消息,但是沒有插入任何記錄。
我的json數據是:
jsondata.json:
{"users": { "bert":6.44, "earnie":0.25, "bigbird":34.45 }}
我的PHP代碼:
<?php
//First: read data
$fo=fopen("data.json","r");
$fr=fread($fo,filesize("data.json"));
$array=json_decode($fr,true);
//Second: create $values
$rows = array();
foreach ($array['users'] as $key => $value)
$rows[] = "('" . $key . "', '" . $value . "')";
$values = implode(",", $rows);
//To display all values from JSON file
echo '<pre>';print_r($array);
//Save to DB
$hostname = 'localhost';
$username = 'root';
$password = '';
try
{
$dbh = new PDO("mysql:host=$hostname;dbname=nodejs", $username, $password);
echo 'Connected to database<br />';
//$count = $dbh->exec("INSERT INTO USERSAMOUNTS(USERNAME, AMOUNT) VALUES " . $values) or die(print_r($dbh->errorInfo(), true));
$count = $dbh->exec("INSERT INTO json(firstName) VALUES " . $values) or die(print_r($dbh->errorInfo(), true));
echo $count;// echo the number of affected rows
$dbh = null;// close the database connection
echo 'Success<br />';
}
catch(PDOException $e)
{
echo $e->getMessage();
}
?>
我認為問題可能出在執行動作的順序上。
<?php
//First: read data
$fo = fopen("jsondata.json", "r");
$fr = fread($fo, filesize("jsondata.json"));
$array = json_decode($fr, true);
//Second: create $values
$rows = array();
foreach ($array['users'] as $key => $value)
$rows[] = "('" . $key . "', '" . $value . "')";
$values = implode(",", $rows);
//Third: display
echo '<pre>';
print_r($array);
//Fourth: save to db
$hostname = 'localhost';
$username = 'root';
$password = '';
try {
$dbh = new PDO("mysql:host=$hostname;dbname=nodejs", $username, $password);
echo 'Connected to database<br />'; // echo a message saying we have connected
$count = $dbh->exec("INSERT INTO USERAMOUNTS(USERNAME, AMOUNT) VALUES " . $values);
echo $count; // echo the number of affected rows
$dbh = null; // close the database connection
echo 'Success<br />';
} catch (PDOException $e) {
echo $e->getMessage();
}
?>
啟用或禁用對准備好的語句的仿真。 一些驅動程序不支持本機准備的語句或對它們的支持有限,以獲取更多信息,請檢查-http://php.net/manual/en/pdo.setattribute.php
$dbh = new PDO("mysql:host=$hostname;dbname=nodejs", $username, $password);
$dbh->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$count = $dbh->exec("INSERT INTO USERAMOUNTS(USERNAME, AMOUNT) VALUES " . $values);
希望能有所幫助。
問題在於您如何嘗試插入數據。 我很驚訝您沒有出錯。
您應該使用准備好的語句。 請參閱以下內容... https://stackoverflow.com/a/4629088/2033178
這里有些東西很時髦。
乍一看,您似乎希望數據神奇地來自$ data(除非它傳遞到某個地方?)
$array = json_decode($data, true);
$rows = array();
foreach($array['users'] as $key => $value)
$rows[] = "('" . $key . "', '" . $value . "')";
$values = implode(",", $rows);
然后,看起來您正在打開文件並解析JSON(但不能用$ rows []做上述魔術)
$fo=fopen("jsondata.json","r");
$fr=fread($fo,filesize("jsondata.json"));
$array=json_decode($fr,true);
為什么不在for每個循環中插入?
$fo=fopen("jsondata.json","r");
$fr=fread($fo,filesize("jsondata.json"));
$array=json_decode($fr,true);
$count = 0;
$dbh = new PDO("mysql:host=$hostname;dbname=nodejs", $username, $password);
try {
foreach($array['users'] as $key => $value)
$count = $count + $dbh->exec("INSERT INTO USERAMOUNTS(USERNAME, AMOUNT) VALUES " . $key . " " . $value . ")";
} catch ...
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