What potential compatibility issues can arise when using PHP versions below 5.4 for certain scripts?

When using PHP versions below 5.4, compatibility issues can arise due to deprecated features and syntax changes. To solve this, you can update your code to use modern PHP syntax and functions that are supported in older versions. Additionally, you can use conditional statements to check the PHP version and adjust the code accordingly. 

if (version_compare(PHP_VERSION, '5.4', '<')) {
    // Code that needs to be updated for compatibility with PHP versions below 5.4
} else {
    // Modern PHP code that is compatible with PHP 5.4 and above
}

Keywords

PHP 5.4 Compatibility issues Deprecated functions Error messages Script execution issues

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