How can PHP developers ensure proper data sanitization when converting spaces in strings?

When converting spaces in strings, PHP developers can ensure proper data sanitization by using the `trim()` function to remove any leading or trailing spaces, and the `preg_replace()` function with a regular expression to replace multiple spaces with a single space. 

// Sample string with extra spaces
$string = "   Hello    World   ";

// Remove leading and trailing spaces
$string = trim($string);

// Replace multiple spaces with a single space
$string = preg_replace('/\s+/', ' ', $string);

// Output sanitized string
echo $string;

Keywords

PHP data sanitization string manipulation regular expressions trim

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