! How does php submit multiple lists?

Source: Internet
Author: User
Urgent help! Php: how to submit multiple lists... As shown in, there are currently four single-choice lists and multiple-choice lists on the webpage. The purpose is that the user clicks the Submit button, obtains the selected options in the background, and then searches the database, finally, the corresponding search results are returned. & Nbsp; however, I do not know how to obtain the user selection option after clicking Submit. That is to say, how can I write the Submit PHP code. Intermediate appearance: urgent help! How does php submit multiple lists?
Tom posted for help... As shown in, there are currently four single-choice lists and multiple-choice lists on the webpage. The purpose is that the user clicks the Submit button, obtains the selected options in the background, and then searches the database, finally, the corresponding search results are returned.

However, I do not know how to obtain the user selection option after clicking Submit. That is to say, how can I write the Submit PHP code. It seems that escape characters are still involved in the middle. please help me!

Attachment: code snippets and web pages (the content in the form is mechanical feature. you can select feature to find the desired mechanical model)

1) This is a single-choice list
HTML code
  

1" SQR. PANEL 0.95"X1.75" PANEL 2"X3" FLAT PACK PANEL HAND HELD CALIBRATOR EXP. PROOF CONDUIT 1.45"X2.55" PANEL NEMA 4X2.6"X3.7" CONDUIT/WALL 1.6"X2" PANEL AVIATION 1" DIAMETER DINRAIL 3 1/2" BARREL PANEL 1/8 DIN PANEL 1/4 DIN PANEL 4" SWITCHBOARD PANEL 1.5"X2.9"X2" PANEL 6"X1" EDGEWISE PANEL 6"X1.75" EDGEWISE PANEL 6.6"X1.4" EDGEWISE PANEL 11.3"X1.4" EDGEWISE PANEL 7"X1.4" EDGEWISE PANEL 7.3"X2.8" EDGEWISE PANEL 6.3"X2.8 EDGE PANEL 5.7"X1.9" EDGE PANEL 5.7"X2.84" EDGE PANEL NAKED PANEL/PCB MOUNT 6"X3.1" EDGE PANEL 6"X6"X3" SANITARY VARIOUS SIZES & MOUNTING



2) This is a check list.
HTML code
  

Outputs (Use ctrl+click to make multiple choices)

ANALOG 4-20mA/VDC RELAYS OPEN COLL. XTR IRDA 4-20mA CALIBRATOR WIRELESS ON REQUEST

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