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    <p>Error reporting will have not included notices on the previous server which is why you haven't seen the errors.</p> <p>You should be checking whether the index <code>s</code> actually exists in the <code>$_GET</code> array before attempting to use it.</p> <p>Something like this would be suffice:</p> <pre><code>if (isset($_GET['s'])) { if ($_GET['s'] == 'jwshxnsyllabus') echo "&lt;body onload=\"loadSyllabi('syllabus', '../syllabi/jwshxnporsyllabus.xml', '../bibliographies/jwshxnbibliography_')\"&gt;"; else if ($_GET['s'] == 'aquinas') echo "&lt;body onload=\"loadSyllabi('syllabus', '../syllabi/AquinasSyllabus.xml')\"&gt;"; else if ($_GET['s'] == 'POP2') echo "&lt;body onload=\"loadSyllabi('POP2')\"&gt;"; } else { echo "&lt;body&gt;"; } </code></pre> <p>It may be beneficial (if you plan on adding more cases) to use a <code>switch</code> statement to make your code more readable.</p> <pre><code>switch ((isset($_GET['s']) ? $_GET['s'] : '')) { case 'jwshxnsyllabus': echo "&lt;body onload=\"loadSyllabi('syllabus', '../syllabi/jwshxnporsyllabus.xml', '../bibliographies/jwshxnbibliography_')\"&gt;"; break; case 'aquinas': echo "&lt;body onload=\"loadSyllabi('syllabus', '../syllabi/AquinasSyllabus.xml')\"&gt;"; break; case 'POP2': echo "&lt;body onload=\"loadSyllabi('POP2')\"&gt;"; break; default: echo "&lt;body&gt;"; break; } </code></pre> <p>EDIT: BTW, the first set of code I wrote mimics what yours is meant to do in it's entirety. Is the expected outcome of an unexpected value in <code>?s=</code> meant to output no <code>&lt;body&gt;</code> tag or was this an oversight? Note that the switch will fix this by always defaulting to <code>&lt;body&gt;</code>.</p>
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    1. COmore better solution than me. +1 for that
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    2. COthanks very neat and helpful
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