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Using Arrays with Form Data in PHP

<SELECT NAME="myselect[]" MULTIPLE SIZE=3> <OPTION VALUE="value1">A</OPTION> <OPTION VALUE="value2">B</OPTION> <OPTION VALUE="value3">C</OPTION> <OPTION VALUE="value4">D</OPTION> </SELECT> //The PHP code to access which value(s) were selected: <?php      foreach($_GET['myselect'] as $val) {           echo "You selected: $val<BR>";      }      echo "You selected ".count($_GET['myselect'])." Values."; ?>