PHP FDF获取值模块

fdf_get_value() 函数可以获取字段的值。

语法

mixed fdf_get_value( resource fdf_document , stringfieldname [, int $which = -1 ] )

fdf_get_value()函数可以获取请求字段名的值。通过传递一个可选的which参数，可以检索数组字段的元素，该参数从零开始。对于非数组字段，可忽略可选参数。

示例

<?php
   fdf = fdf_open_string(HTTP_FDF_DATA);
   volume = fdf_get_value(fdf, "volume");
   echo "The volume field has the value '<b>volume</b>'<br />";date = fdf_get_value(fdf, "date");
   echo "The date field has the value '<b>date</b>'<br />";
   comment = fdf_get_value(fdf, "comment");
   echo "The comment field has the value '<b>comment</b>'<br />";
   if(fdf_get_value(fdf, "show_publisher") == "On") {
      publisher = fdf_get_value(fdf, "publisher");
      echo "The publisher field has the value <b>publisher</b>'<br />";
   } else      echo "Publisher shall not be shown.<br />";
   if(fdf_get_value(fdf, "show_preparer") == "On") {
      preparer = fdf_get_value(fdf, "preparer");
      echo "The preparer field has the value '<b>preparer</b>'<br />";
   } else
      echo "Preparer shall not be shown.<br />";
   fdf_close(fdf);
?>