How can the HTML source code be compared to identify differences causing spacing issues in PHP output?

To identify differences causing spacing issues in PHP output, you can compare the HTML source code generated by your PHP script with the expected output. Look for any extra spaces, line breaks, or HTML tags that might be causing the spacing issues. To solve this problem, you can use functions like trim() or preg_replace() to remove any unwanted spaces or characters from your PHP output. 

// Example PHP code snippet to remove extra spaces from PHP output
$output = "   This is a test   ";
$clean_output = trim($output);
echo $clean_output;

Keywords

HTML source code comparison spacing issues PHP output differences

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