How to convert php array object to array object

In PHP, sometimes we need to convert an array object into another array object. This process is not difficult and can be achieved with just a few lines of simple code.

The main steps to convert an array object into an array object are as follows:

1. Define the source data

Suppose we have a source array object that contains multiple Object elements, each element has several properties. We need to convert these object elements into another array object, and each element only needs to contain certain attributes.

The code is as follows:

$sourceArray = array(
    (object) array('id' => 1, 'name' => 'John', 'age' => 25),
    (object) array('id' => 2, 'name' => 'Amy', 'age' => 35),
    (object) array('id' => 3, 'name' => 'Bob', 'age' => 28),
    (object) array('id' => 4, 'name' => 'Cathy', 'age' => 30)
);

2. Define the target data structure

We need to define the data structure of the target array object, that is, what attributes each element contains. If each element of the target array contains all the attributes in the source array, then the target array can be directly equal to the source array without any conversion.

$targetStructure = array(
    'id' => '',
    'name' => '',
);

3. Implementing the conversion

Now that we have the data structures of the source array and the target array, the next step is to handle the conversion process. We can use a foreach loop to iterate through each element in the source array and copy the corresponding attributes in the source array to the target array based on the data structure of the target array.

$targetArray = array();

foreach ($sourceArray as $sourceObject) {
    $targetObject = array();

    foreach ($targetStructure as $key => $value) {
        $targetObject[$key] = $sourceObject->$key;
    }

    $targetArray[] = (object) $targetObject;
}

In the above code, we first define an empty array $targetArray to save the converted data. Then we performed a foreach loop on the source array, traversing each element $sourceObject. In the inner loop, the $targetStructure of the target array is looped to generate the corresponding key and value. Finally, we convert each target element into a new object and add it to the $targetArray.

4. Output results

Finally, we can output the converted target array to check whether the conversion is successful. We can use the print_r() function to output an array, or we can use the json_encode() function to convert the array into JSON format to facilitate viewing of the output results.

echo json_encode($targetArray);

In this way, we have completed all the steps of array object conversion. The complete code is as follows:

$sourceArray = array(
    (object) array('id' => 1, 'name' => 'John', 'age' => 25),
    (object) array('id' => 2, 'name' => 'Amy', 'age' => 35),
    (object) array('id' => 3, 'name' => 'Bob', 'age' => 28),
    (object) array('id' => 4, 'name' => 'Cathy', 'age' => 30)
);

$targetStructure = array(
    'id' => '',
    'name' => '',
);

$targetArray = array();

foreach ($sourceArray as $sourceObject) {
    $targetObject = array();

    foreach ($targetStructure as $key => $value) {
        $targetObject[$key] = $sourceObject->$key;
    }

    $targetArray[] = (object) $targetObject;
}

echo json_encode($targetArray);

In actual development, we may need to perform more processing and filtering of data, but the general idea is basically the same as the above sample code. If we encounter the need for data conversion, we can modify the code according to the actual situation and complete the corresponding data processing.

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