How can the use of trim() function in PHP help in removing unnecessary whitespaces from strings while processing text files?

When processing text files in PHP, it is common to encounter strings with unnecessary whitespaces at the beginning or end. These whitespaces can affect the output or processing of the text. By using the trim() function in PHP, you can easily remove these unnecessary whitespaces from strings, ensuring that your text processing is accurate and efficient. 

// Example code snippet using trim() function to remove unnecessary whitespaces from strings while processing text files

$file = 'example.txt';
$lines = file($file);

foreach ($lines as $line) {
    $trimmedLine = trim($line);
    // Process the trimmed line further as needed
}

Keywords

PHP trim() whitespace strings text files

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