Vermeiden, dass Sprachvariable aus Versehen überschrieben wird

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<div id="page-body" class="page-body" role="main"> <h2 class="topic-title"><a href="./viewtopic.php?t=246633&sid=2b2c7c037a809af5ce0dda4e00a7ffa6">Vermeiden, dass Sprachvariable aus Versehen überschrieben wird</a></h2>  <div style="display: none !important;">In diesem Forum gibt es Starthilfe zum neuen Extension-System von phpBB 3.1/3.2. 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id="p1421656" class="post has-profile bg2"> <div class="inner"> <dl class="postprofile" id="profile1421656"> <dt class="has-profile-rank no-avatar"> <div class="avatar-container"> </div> <a href="./memberlist.php?mode=viewprofile&u=204768&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" class="username">mbld</a> </dt> <dd class="profile-rank">Mitglied</dd> <dd class="profile-posts"><strong>Beiträge:</strong> <a href="./search.php?author_id=204768&sr=posts&sid=2b2c7c037a809af5ce0dda4e00a7ffa6">30</a></dd> <dd class="profile-joined"><strong>Registriert:</strong> 18.10.2016 16:59</dd> </dl> <div class="postbody"> <div id="post_content1421656"> <h3 class="first"> <a href="./viewtopic.php?p=1421656&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421656">Vermeiden, dass Sprachvariable aus Versehen überschrieben wird</a> </h3> <ul class="post-buttons"> <li> <a href="./posting.php?mode=quote&p=1421656&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" title="Mit Zitat antworten" class="button button-icon-only"> <i class="icon fa-quote-left fa-fw" aria-hidden="true"></i><span class="sr-only">Zitieren</span> </a> </li> </ul> <p class="author"> <a class="unread" href="./viewtopic.php?p=1421656&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421656" title="Beitrag"> <i class="icon fa-file fa-fw icon-lightgray icon-md" aria-hidden="true"></i><span class="sr-only">Beitrag</span> </a> <span class="responsive-hide">von <strong><a href="./memberlist.php?mode=viewprofile&u=204768&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" class="username">mbld</a></strong> » </span><time datetime="2023-02-18T09:11:52+00:00">18.02.2023 10:11</time> </p> <div class="content">Ich habe in meiner Extension in common.php die Sprachvariable LAST_POST definiert, und dabei nicht beachtet, dass diese auch im Core schon definiert ist und durch meine Extension mit einem Text überschrieben wird, der im Core nicht wirklich passend ist.<br> Wie kann ich denn vermeiden, dass ich aus versehen die gleichen Variablen benutze wie der Core?<br> Geht das nur, indem ich vor jede Variable einen Prefix setze, der hoffentlich sonst nirgends genutzt wird?<br> Oder gibt es andere "best practices"?</div> </div> </div> <div class="back2top"> <a href="#top" class="top" title="Nach oben"> <i class="icon fa-chevron-circle-up fa-fw icon-gray" aria-hidden="true"></i> <span class="sr-only">Nach oben</span> </a> </div> </div> </div> <div id="p1421657" class="post has-profile bg1"> <div class="inner"> <dl class="postprofile" id="profile1421657"> <dt class="has-profile-rank has-avatar"> <div class="avatar-container"> <a href="./memberlist.php?mode=viewprofile&u=142140&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" class="avatar"><img class="avatar" src="./download/file.php?avatar=142140_1279703111.jpg" width="80" height="60" alt="Benutzeravatar" /></a> </div> <a href="./memberlist.php?mode=viewprofile&u=142140&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" style="color: #2B42AF;" class="username-coloured">Kirk</a> </dt> <dd class="profile-rank">Supporter<br /><img src="./images/ranks/rang_supporter.png" alt="Supporter" title="Supporter" /></dd> <dd class="profile-posts"><strong>Beiträge:</strong> <a href="./search.php?author_id=142140&sr=posts&sid=2b2c7c037a809af5ce0dda4e00a7ffa6">8019</a></dd> <dd class="profile-joined"><strong>Registriert:</strong> 24.05.2010 08:31</dd> <dd class="profile-contact"> <strong>Kontaktdaten:</strong> <div class="dropdown-container dropdown-left"> <a href="#" class="dropdown-trigger" title="Kontaktdaten von Kirk"> <i class="icon fa-commenting-o fa-fw icon-lg" aria-hidden="true"></i><span class="sr-only">Kontaktdaten von Kirk</span> </a> <div class="dropdown"> <div class="pointer"><div class="pointer-inner"></div></div> <div class="dropdown-contents contact-icons"> <div> <a href="http://kirk.bplaced.net/kirk/" title="Website" class="last-cell"> <span class="contact-icon phpbb_website-icon">Website</span> </a> </div> </div> </div> </div> </dd> </dl> <div class="postbody"> <div id="post_content1421657"> <h3 > <a href="./viewtopic.php?p=1421657&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421657">Re: Vermeiden, dass Sprachvariable aus Versehen überschrieben wird</a> </h3> <ul class="post-buttons"> <li> <a href="./posting.php?mode=quote&p=1421657&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" title="Mit Zitat antworten" class="button button-icon-only"> <i class="icon fa-quote-left fa-fw" aria-hidden="true"></i><span class="sr-only">Zitieren</span> </a> </li> </ul> <p class="author"> <a class="unread" href="./viewtopic.php?p=1421657&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421657" title="Beitrag"> <i class="icon fa-file fa-fw icon-lightgray icon-md" aria-hidden="true"></i><span class="sr-only">Beitrag</span> </a> <span class="responsive-hide">von <strong><a href="./memberlist.php?mode=viewprofile&u=142140&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" style="color: #2B42AF;" class="username-coloured">Kirk</a></strong> » </span><time datetime="2023-02-18T10:14:57+00:00">18.02.2023 11:14</time> </p> <div class="content">Hallo<br> Um dies zu vermeiden müsstest du eine eigene Sprachvariable definieren, wie du bereits erwähnt hast z. B. durch ein vorangestellten Präfix.</div> <div id="sig1421657" class="signature"><span style="color:#0000FF">Gruß Udo</span><br> <a href="https://kirk-phpbb.com/viewforum.php?f=41" class="postlink"><span style="color:#0000FF">Meine Extensions</span></a></div> </div> </div> <div class="back2top"> <a href="#top" class="top" title="Nach oben"> <i class="icon fa-chevron-circle-up fa-fw icon-gray" aria-hidden="true"></i> <span class="sr-only">Nach oben</span> </a> </div> </div> </div> <div id="p1421658" class="post has-profile bg2"> <div class="inner"> <dl class="postprofile" id="profile1421658"> <dt class="has-profile-rank has-avatar"> <div class="avatar-container"> <a href="./memberlist.php?mode=viewprofile&u=190625&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" class="avatar"><img class="avatar" src="./download/file.php?avatar=190625_1430903531.jpg" width="80" height="80" alt="Benutzeravatar" /></a> </div> <a href="./memberlist.php?mode=viewprofile&u=190625&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" style="color: #2B42AF;" class="username-coloured">LukeWCS</a> </dt> <dd class="profile-rank">Supporter<br /><img src="./images/ranks/rang_supporter.png" alt="Supporter" title="Supporter" /></dd> <dd class="profile-posts"><strong>Beiträge:</strong> <a href="./search.php?author_id=190625&sr=posts&sid=2b2c7c037a809af5ce0dda4e00a7ffa6">2714</a></dd> <dd class="profile-joined"><strong>Registriert:</strong> 15.12.2014 10:19</dd> <dd class="profile-contact"> <strong>Kontaktdaten:</strong> <div class="dropdown-container dropdown-left"> <a href="#" class="dropdown-trigger" title="Kontaktdaten von LukeWCS"> <i class="icon fa-commenting-o fa-fw icon-lg" aria-hidden="true"></i><span class="sr-only">Kontaktdaten von LukeWCS</span> </a> <div class="dropdown"> <div class="pointer"><div class="pointer-inner"></div></div> <div class="dropdown-contents contact-icons"> <div> <a href="https://www.wcsaga.org" title="Website" class="last-cell"> <span class="contact-icon phpbb_website-icon">Website</span> </a> </div> </div> </div> </div> </dd> </dl> <div class="postbody"> <div id="post_content1421658"> <h3 > <a href="./viewtopic.php?p=1421658&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421658">Re: Vermeiden, dass Sprachvariable aus Versehen überschrieben wird</a> </h3> <ul class="post-buttons"> <li> <a href="./posting.php?mode=quote&p=1421658&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" title="Mit Zitat antworten" class="button button-icon-only"> <i class="icon fa-quote-left fa-fw" aria-hidden="true"></i><span class="sr-only">Zitieren</span> </a> </li> </ul> <p class="author"> <a class="unread" href="./viewtopic.php?p=1421658&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421658" title="Beitrag"> <i class="icon fa-file fa-fw icon-lightgray icon-md" aria-hidden="true"></i><span class="sr-only">Beitrag</span> </a> <span class="responsive-hide">von <strong><a href="./memberlist.php?mode=viewprofile&u=190625&sid=2b2c7c037a809af5ce0dda4e00a7ffa6" style="color: #2B42AF;" class="username-coloured">LukeWCS</a></strong> » </span><time datetime="2023-02-18T11:37:57+00:00">18.02.2023 12:37</time> </p> <div class="content">Hallo<br> <br> Es gibt im phpBB Umfeld mehrere globale Namensräume wo es zu Kollisionen kommen kann. Zu Variablen mit globalem Namensraum gehören zum Beispiel Sprachvariablen. Dazu gehören übrigens auch Config Variablen (DB) und Template Variablen.<br> <blockquote cite="./viewtopic.php?p=1421656&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421656"><div><cite><a href="./memberlist.php?mode=viewprofile&u=204768&sid=2b2c7c037a809af5ce0dda4e00a7ffa6">mbld</a> hat geschrieben: <a href="./viewtopic.php?p=1421656&sid=2b2c7c037a809af5ce0dda4e00a7ffa6#p1421656" aria-label="Zitierten Beitrag anzeigen" data-post-id="1421656" onclick="if(document.getElementById(hash.substr(1)))href=hash"><i class="icon fa-arrow-circle-up fa-fw" aria-hidden="true"></i></a><span class="responsive-hide">18.02.2023 10:11</span></cite> Oder gibt es andere "best practices"? </div></blockquote> Jupp, wie Kollege Kirk schon schrieb: Präfix nutzen. <br> <blockquote class="uncited"><div>Geht das nur, indem ich vor jede Variable einen Prefix setze, der hoffentlich sonst nirgends genutzt wird?</div></blockquote> Best practice wäre hier einen Kurznamen der Ext als Präfix zu nutzen. Bei meinem "LF who was here" benutze ich zum Beispiel das Präfix <code class="inline">LFWWH_</code>. Wenn du weitere Beispiele brauchst, guck dir meine Erweiterungen an die ich im Forum "Extensions in Entwicklung" habe. Da findest du für so gut wie jeden Variablen-Bereich Beispiele. Ebenfalls "Best practice" wäre dann das konsequent zu nutzen. Also nicht nur für ein paar Variablen, sondern für alle die man selber definiert.<br> <br> Wir haben bei phpBB keine "isolierten" Bereiche, sondern einen riesigen gemeinsamen Pool an zig verschiedenen Variablen-Bereichen. Dadurch haben Ext Coder weitreichende Möglichkeiten. Und das müssen sie auch haben, da sonst vieles gar nicht realisierbar wäre. Das heisst aber auch, dass man seine Ext immer so gestalten muss, dass es mit anderen Exts und phpBB nicht zu Kollisionen kommen kann.</div> <div id="sig1421658" class="signature">Möge das Backup mit dir sein. 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