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<?php
function maybe_unserialize( $original ) {
    if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in
        return @unserialize( $original );
    return $original;
}
?>

• Function Reference/maybe unserialize « WordPress Codex
  Description. Unserialize value only if it was serialized. Usage. <?php maybe_unserialize( $original ) ?> Parameters. $original: (string) (required) Maybe ...
  codex.wordpress.org
• #16504 (Faster maybe_unserialize) – WordPress Trac
  No exceptions. And they are always trimmed strings. As is_serialized() is of general use and might be used by plugin authors, maybe_unserialize can get a new ...
  core.trac.wordpress.org
• #19617 (Use maybe_unserialize() for HTTP requests) – WordPress ...
  In a few cases, we use this convention: unserialize( wp_remote_retrieve_body( $ response ) ). When the request fails, unserialize() gets an empty string, and ...
  core.trac.wordpress.org
• maybe_unserialize() WordPress function reference, arguments and ...
  function maybe_unserialize( $original ) { if ( is_serialized( $original ) ) // don't attempt to unserialize data that wasn't serialized going in return @unserialize( ...
  queryposts.com

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