What are the potential pitfalls of assuming a specific data structure when receiving data from a webservice in PHP?

Assuming a specific data structure when receiving data from a webservice in PHP can lead to errors if the structure of the data changes unexpectedly. To avoid this issue, it's best to validate the incoming data and handle any variations in the structure gracefully. 

// Example of validating incoming data structure from a webservice
$data = json_decode($webservice_response, true);

if (isset($data['key1']) && isset($data['key2'])) {
    // Process the data
} else {
    // Handle the case where the data structure doesn't match expectations
}

Keywords

data structure webservice PHP error handling validation

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