What potential errors or issues can arise when trying to exclude specific lines from PHP output?

When trying to exclude specific lines from PHP output, potential errors or issues that can arise include mistakenly excluding necessary code, causing syntax errors, or disrupting the functionality of the program. To avoid these issues, it is important to carefully identify the lines that need to be excluded and ensure that the exclusion does not impact the overall functionality of the code. 

<?php
// Example code snippet to exclude specific lines from PHP output
echo "This line will be displayed.";

// This line will be excluded from the output
// echo "This line will not be displayed.";

echo "This line will also be displayed.";
?>

Keywords

PHP output buffering ob_start ob_get_clean error_reporting

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