How To แก้ปัญหา upload file แบบ multi file

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อ้างอิงจาก YUI Security Issue found in uploader.swf

adding a `multiple` attribute for the file input elements:
In the `assetmanager` template, find

<input id="firstuploadinput" type="file" class="bginput uploadinput" name="attachment[]" size="30" tabindex="1" />

and replace it by

<input id="firstuploadinput" type="file" class="bginput uploadinput" name="attachment[]" size="30" tabindex="1" multiple />

In the `editor_upload_overlay` template, find

<input id="fileupload1" class="textbox" type="file" size="30" name="attachment[]" tabindex="1" />

and replace it by

<input id="fileupload1" class="textbox" type="file" size="30" name="attachment[]" tabindex="1" multiple />

This will allow users with modern (HTML5 compliant) browsers to select multiple files for uploading by using the usual file picker dialog of their operating system (holding the ctrl/shift keys to select multiple files). No code changes or plugins are required for this to work, since vBulletin is ready to process multiple uploads at once. If an user selects more files than the limit you specified in the option named above, extra uploads will fail.