Pros of polyfill-php73

• Supports newer PHP 7.3 features, including is_countable() and array_key_first()
• Provides compatibility for projects using PHP 7.3 syntax on older PHP versions
• Includes all functionality from polyfill-php72, offering a more comprehensive solution

Cons of polyfill-php73

• Slightly larger file size due to additional features
• May introduce unnecessary overhead if only PHP 7.2 compatibility is required
• Potential for conflicts if used alongside polyfill-php72 in the same project

Code Comparison

polyfill-php72:

if (!function_exists('is_iterable')) {
    function is_iterable($var) {
        return is_array($var) || $var instanceof Traversable;
    }
}

polyfill-php73:

if (!function_exists('is_countable')) {
    function is_countable($var) {
        return is_array($var) || $var instanceof Countable;
    }
}

Both polyfills provide similar functionality, but polyfill-php73 includes additional features specific to PHP 7.3. The choice between the two depends on the required PHP version compatibility and the specific features needed in a project. polyfill-php73 is generally more comprehensive, but polyfill-php72 may be sufficient for projects not utilizing PHP 7.3 features.

Pros of polyfill-php80

• Supports more recent PHP 8.0 features, including new functions and classes
• Provides compatibility for newer language constructs like union types
• Includes polyfills for additional functions like fdiv() and get_debug_type()

Cons of polyfill-php80

• May have a slightly larger footprint due to supporting more features
• Potentially less stable or mature compared to polyfill-php72
• Could introduce unnecessary overhead if targeting PHP versions below 8.0

Code Comparison

polyfill-php80:

if (!function_exists('fdiv')) {
    function fdiv($dividend, $divisor) {
        return @($dividend / $divisor);
    }
}

polyfill-php72:

if (!function_exists('spl_object_id')) {
    function spl_object_id($object) {
        return Symfony\Polyfill\Php72\Php72::spl_object_id($object);
    }
}

The code examples show how each polyfill implements missing functions for their respective PHP versions. polyfill-php80 adds newer functions like fdiv(), while polyfill-php72 focuses on older functions like spl_object_id().

Pros of random_compat

• Focused specifically on providing secure random number generation
• Extensively audited for security vulnerabilities
• Supports a wider range of PHP versions (5.2 to 7.0+)

Cons of random_compat

• Limited in scope to random number generation only
• May require additional polyfills for other PHP 7.0+ features
• Slightly larger file size due to comprehensive random number support

Code Comparison

random_compat:

$bytes = random_bytes(32);
$integer = random_int(0, 100);

polyfill-php72:

$bytes = random_bytes(32);
$integer = random_int(0, 100);
// Also includes other PHP 7.2+ polyfills

Summary

While both libraries provide polyfills for PHP features, random_compat focuses solely on secure random number generation, offering extensive security audits and wider PHP version support. polyfill-php72, on the other hand, provides a broader range of PHP 7.2+ features but with less depth in any specific area. The code usage for random functions is identical, but polyfill-php72 includes additional polyfills beyond random number generation.

Pros of password_compat

• Focused specifically on password hashing functionality
• Lightweight and easy to integrate into existing projects
• Provides a straightforward API for password hashing and verification

Cons of password_compat

• Limited scope compared to polyfill-php72's broader PHP 7.2 feature set
• Less actively maintained (last update in 2018)
• May not be necessary for newer PHP versions that include native password hashing functions

Code Comparison

password_compat:

$hash = password_hash("password123", PASSWORD_DEFAULT);
$verify = password_verify("password123", $hash);

polyfill-php72:

$str = mb_chr(0x1F600);
$result = spl_object_id($object);
$stream = stream_isatty(STDOUT);

While password_compat focuses solely on password hashing functions, polyfill-php72 provides a broader range of PHP 7.2 features. The code examples demonstrate this difference in scope, with password_compat offering specific password-related functions and polyfill-php72 covering various PHP 7.2 functionalities.