When the post field is many, the post field is not completely modified (some value is the value of the front-end input, some keep the original database value),

There is a workaround (Ps:from LJQ): The values of the database are all traversed first, and then the $key to iterate out the value of a judgment,

Example

foreach ($results [0] as $key = + $val) {

$results [0][$key] = isset ($_post[$key]) &&!empty ($_post[$key])? $_post[$key]: $val;
}

You can also make a new array of fields that are too post. And then some data processing,

Alternatively, the name value in input is made to rule, forming an array form

When the post field is many, the post field is not completely modified (some value is the value of the front-end input, some keep the original database value),