"Wrapping" a method using Patchwork 1.2

ad-hoc.php

<?php

# Ad-hoc code for a hypothetical method named Filesystem::contains.

$replacement = function($path) use (&$replacement, &$handle) {
    # Run code before the original function
    echo 'Before', PHP_EOL;
    # Make this replacement function disable itself
    Patchwork\undo($handle);
    # Call the original function
    $result = Filesystem::contains($path);
    # Re-enable this replacement function
    $handle = Patchwork\replace('Filesystem::contains', $replacement);
    # Run code after the original function
    echo 'After', PHP_EOL;
};

$handle = Patchwork\replace('Filesystem::contains', $replacement);