mysql 数据转json格式 mysql结果直接转json

下面的代码只是一个概念证明.它需要在函数/方法中进行封装,并在生产中使用它之前进行一些抛光(例如,在循环中调用mysqli_fetch_field()并在处理任何行之前存储它返回的对象,而不是每行一次).

// Get the data
$result = mysqli_query($db, "SELECT * FROM table WHERE id=1");
$row = mysqli_fetch_assoc($result);
// Fix the types
$fixed = array();
foreach ($row as $key => $value) {
$info = mysqli_fetch_field($result);
if (in_array($info->type, array(
MYSQLI_TYPE_TINY, MYSQLI_TYPE_SHORT, MYSQLI_TYPE_INT24,
MYSQLI_TYPE_LONG, MYSQLI_TYPE_LONGLONG,
MYSQLI_TYPE_DECIMAL,
MYSQLI_TYPE_FLOAT, MYSQLI_TYPE_DOUBLE
))) {
$fixed[$key] = 0 + $value;
} else {
$fixed[$key] = $value;
}
}
// Compare the results
echo('all strings: '.json_encode($row)."\n");
echo('fixed types: '.json_encode($fixed)."\n");