When working with command line outputs in PHP, what are some best practices for handling whitespace or formatting inconsistencies that may affect data extraction?

When working with command line outputs in PHP, it's important to account for whitespace or formatting inconsistencies that may affect data extraction. One way to handle this is by using regular expressions to match and extract the desired data, while ignoring any extraneous whitespace or formatting. This ensures that your data extraction process is robust and can handle variations in the input format.

// Sample code snippet to extract data from command line output with regular expressions

$output = shell_exec('your_command_here');

// Define a regular expression pattern to match and extract the desired data
$pattern = '/YourPatternHere/';

// Use preg_match to extract the data based on the defined pattern
if (preg_match($pattern, $output, $matches)) {
    $extractedData = $matches[1]; // Extracted data will be in $matches[1]
    // Further processing or output of extracted data
} else {
    echo "No data found.";
}