如何在PHP中创建示例所示结构的对象？

Hey there! Since you're new to PHP, let's walk through exactly how to build the data structure you shared. That example you provided is essentially a nested collection of key-value pairs and lists—something PHP handles really well with arrays (and optionally objects later on).

Step 1: Break Down the Structure #

First, let's map out what we need:

• A top-level container with three keys: ERROR_CODE, M_USER, and TRANS_LANGUAGE
• M_USER is a set of user-specific key-value attributes
• TRANS_LANGUAGE is a list of two items, each with their own C and L keys

Step 2: Build the PHP Code #

Here's the full code to create this structure, with comments to explain each part:

<?php
// First, create the M_USER attribute set as an associative array
$userDetails = [
    'CREATE_DATE' => '2018-05-09 13:57:49',
    'CREATE_USER_ID' => 't1074567',
    'FACE_PICTURE_FILE_PATH' => null, // Use null for empty values; change to '<null>' if you need that exact string
    'MAIL_ADDRESS' => 'Testing@gmail.com',
    'NATIVE_LANGUAGE_CD' => 102,
    'REQ_LANGUAGE_CD' => 102,
    'TERMINAL_ID' => 'C71B456F-EA16-4734-8C9B-00B0856143DA',
    'TERMINAL_TYPE' => 1,
    'TOTAL_GRADE' => 0,
    'TRANSLATABLE_FLG' => 1,
    'UPDATE_DATE' => '2018-05-09 13:57:49',
    'UPDATE_USER_ID' => 'tdu1074567',
    'USER_ID' => 'tdu1074567',
    'USER_NAME' => 'Testing',
    'USER_PWD' => 'testing123',
    'VALID_FLG' => 1
];

// Create the TRANS_LANGUAGE list as an indexed array of associative arrays
$languagePairs = [
    ['C' => 102, 'L' => 10203],
    ['C' => 101, 'L' => 10101]
];

// Combine everything into the top-level array
$finalData = [
    'ERROR_CODE' => 0,
    'M_USER' => $userDetails,
    'TRANS_LANGUAGE' => $languagePairs
];

// Optional: Convert to a standard JSON string (matches your example's structure with proper JSON syntax)
echo json_encode($finalData, JSON_PRETTY_PRINT);
?>

Key Notes for PHP Newbies: #

• Associative Arrays: Used for M_USER and each item in TRANS_LANGUAGE—these are key-value pairs, just like the structure you showed.
• Indexed Arrays: Used for TRANS_LANGUAGE to hold the list of language pairs.
• Null Values: I used null for FACE_PICTURE_FILE_PATH—if you specifically need the string <null> instead of a real null value, just replace null with '<null>'.
• JSON Output: The json_encode function turns your PHP array into a valid JSON string, which is probably what you're aiming for given your example. The JSON_PRETTY_PRINT option makes the output formatted and easy to read, just like your sample.

Bonus: Convert to an Object #

If you need this as a PHP object instead of an array, you can cast it like this:

$finalDataObj = (object)$finalData;
// Access properties like this: $finalDataObj->ERROR_CODE or $finalDataObj->M_USER->USER_ID

内容的提问来源于stack exchange，提问作者Kyaw Zin Wai