What are the potential issues when using explode() in PHP to format data from a textarea input?

When using explode() in PHP to format data from a textarea input, potential issues may arise if the input contains special characters or extra whitespace. To solve this, you can trim the input string to remove any leading or trailing whitespace before using explode() and also sanitize the input to handle special characters properly. 

// Get the input from the textarea
$input = $_POST['textarea_input'];

// Trim and sanitize the input
$input = trim($input);
$input = htmlspecialchars($input);

// Explode the input into an array
$data = explode("\n", $input);

// Loop through the array and process each line
foreach($data as $line){
    // Process each line as needed
}

Keywords

explode PHP textarea input data formatting potential issues

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