[英]restoring multi-select selections in a list box in PHP/HTML
so I have a multi-select listbox... 所以我有一个多选列表框...
<select id="extfeat" name="extfeat[]" size="6" multiple="">
<option value="Wheel_Chair Accessible">Wheel Chair Accessible</option>
<option value="Fruit_Trees">Fruit Trees</option>
<option value="Large_Trees">Large Trees</option>
<option value="Rolling">Rolling</option>
<option value="Other">Other</option>
<option value="Level">Level</option>
<option value="Wooded">Wooded</option>
<option value="Outbuildings">Outbuildings</option>
<option value="Gazebo">Gazebo</option>
<option value="Workshop Area">Workshop Area</option>
<option value="Sauna">Sauna</option>
<option value="Courtyard">Courtyard</option>
<option value="Lake_Access">Lake Access</option>
<option value="Tillable">Tillable</option>
<option value="Deck">Deck</option>
<option value="Lakeview">Lakeview</option>
<option value="Propane_Tank_-_Leased">Propane Tank - Leased</option>
<option value="Dock">Dock</option>
<option value="Landscaped">Landscaped</option>
<option value="Propane_Tank - Owned">Propane Tank - Owned</option>
<option value="Fenced_Yard">Fenced Yard</option>
<option value="Water_Frontage">Water Frontage</option>
<option value="Concrete_Parking">Concrete Parking</option>
<option value="Pond">Pond</option>
<option value="Tennis_Court">Tennis Court</option>
<option value="Circle_Drive">Circle Drive</option>
<option value="Horses_Allowed">Horses Allowed</option>
<option value="Patio_Enclosed">Patio Enclosed</option>
<option value="Sprinkler_System">Sprinkler System</option>
<option value="Brick_Trim">Brick Trim</option>
<option value="Guest_House">Guest House</option>
<option value="Terraced">Terraced</option>
<option value="Hot_Tub">Hot Tub</option>
<option value="Outdoor_Sign">Outdoor Sign</option>
<option value="Garden">Garden</option>
<option value="Above_ground_pool">Above ground pool</option>
<option value="Ground_Lvl_Access">Ground Lvl Access</option>
<option value="Handicap_Access">Handicap Access</option>
<option value="Patio">Patio</option>
<option value="Garage_Opener">Garage Opener</option>
<option value="In-ground_Pool">In-ground Pool</option>
<option value="Greenhouse">Greenhouse</option>
<option value="Pasture">Pasture</option>
<option value="Shed">Shed</option>
<option value="Boat_House">Boat House</option>
<option value="Antenna">Antenna</option>
<option value="Generator">Generator</option>
<option value="Asphalt_Parking">Asphalt Parking</option>
<option value="Sloping">Sloping</option>
<option value="Porch">Porch</option>
<option value="Satellite_Dish">Satellite Dish</option>
<option value="Screened_Porch">Screened Porch</option>
<option value="Underground_Pet_Fence">Underground Pet Fence</option>
<option value="Pool">Pool</option>
</select>
so lets say a user selects 7 options and does a search...my search has a refine option and this along with many other fields are saved and stored in a hidden div that can be brought up again by pressing a button... 假设用户选择了7个选项并进行搜索...我的搜索有一个优化选项,此选项和许多其他字段一起保存并存储在一个隐藏的div中,可以通过按下按钮再次将其调出...
the problem is that the extfeats[] variable isn't retaining the selections after the POST...i need to somehow transfer the existing multiselections as the defaults. 问题是POST之后extfeats []变量没有保留选择...我需要以某种方式将现有的多选作为默认值传输。
If you know which options were selected you can mark them as selected by default with: selected="selected"
: 如果您知道选择了哪些选项,则可以通过以下方式将它们标记为默认选项: selected="selected"
:
<select id="extfeat" name="extfeat[]" size="6" multiple="">
<option value="Wheel_Chair Accessible">Wheel Chair Accessible</option>
<option value="Fruit_Trees" selected="selected">Fruit Trees</option>
// ..
</select>
On a minor note multiple=""
should probably be multiple="multiple"
. 略微注意, multiple=""
应该应该是multiple="multiple"
。
ok...well it turned out to be easier then i thought... 好的...那么事实证明这容易得多,然后我想...
<select id="extfeat" name="extfeat[]" size="6" multiple="">
<option value="Wheel_Chair Accessible" <? if (in_array("Wheel_Chair Accessible",$extfeat)) echo "selected" ?> >Wheel Chair Accessible</option>
<option value="Fruit_Trees" <? if (in_array("Fruit_Trees",$extfeat)) echo "selected" ?>>Fruit Trees</option>
...
thxs to Frits van Campen for your gentle push in the right direction ;) 感谢Frits van Campen朝着正确的方向轻轻推动;)
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