How can the use of substr() function in PHP help in resolving issues related to extra spaces in formatted strings?

When dealing with formatted strings in PHP, extra spaces can often be an issue, especially when concatenating strings or manipulating user input. The substr() function in PHP can help resolve this issue by allowing you to extract a portion of a string without including any leading or trailing spaces. By using substr() to extract the desired portion of the string, you can effectively remove any extra spaces that may be present.

// Example code demonstrating the use of substr() to remove extra spaces from a formatted string
$formattedString = "   Hello,   World!   ";
$trimmedString = substr($formattedString, 3, -3); // Extracting the string without leading or trailing spaces
echo $trimmedString; // Output: "Hello,   World!"