htmlentities -> htmlspecialchars
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@@ -203,7 +203,7 @@
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$hash_num=hexdec(substr(md5($cat),0,7));
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$label_theme=$color_theme[$hash_num%count($color_theme)];
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if($label_theme=="") $label_theme="default";
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echo "<a class='label label-$label_theme' style='display: inline-block;' href='problemset.php?search=".urlencode(htmlentities($cat,ENT_QUOTES,'utf-8'))."'>".htmlentities($cat,ENT_QUOTES,'utf-8')."</a> ";
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echo "<a class='label label-$label_theme' style='display: inline-block;' href='problemset.php?search=".urlencode(htmlspecialchars($cat,ENT_QUOTES,'utf-8'))."'>".htmlspecialchars($cat,ENT_QUOTES,'utf-8')."</a> ";
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}?>
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</div>
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