What are the potential differences between PHP versions on different servers that could affect the functionality of a script?

Potential differences between PHP versions on different servers that could affect the functionality of a script include deprecated functions, changes in syntax, and differences in available extensions or configurations. To ensure compatibility, it's important to check the PHP version requirements of the script and make any necessary adjustments to accommodate the specific version running on the server. 

// Example code snippet to check PHP version compatibility
if (version_compare(PHP_VERSION, '7.0.0') < 0) {
    // Code to handle compatibility with PHP versions below 7.0.0
} else {
    // Code to handle compatibility with PHP versions 7.0.0 and above
}

Keywords

PHP versions server configuration compatibility function deprecation error handling

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