How to Use HTML Parameters in PHP?

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  • xmp333@yahoo.com
    #1

    How to Use HTML Parameters in PHP?

    Hi,

    I'm trying to create a page where clicking on a link will go to a php
    page and pass it parameters so it can determine which link was
    clicked. I don't want to use any client side scripting for this, so
    making the link act as a submit button via javascript won't do.

    Unfortunately, this isn't working. Here is the sample code.

    First the page with the links:

    <html>
    <body>
    <a href="dest.php? link=Link1">Lin k 1</a>
    <a href="dest.php? link=Link2">Lin k 2</a>
    </body>
    </html>

    And the php script:

    <html>
    <body>
    <? if ($_GET['Link1'])
    echo "Link 1 Clicked";
    else
    echo "Link 2 Clicked"; ?>
    </body>
    </html>


    In the above script, also tried $_POST, but php is not picking up the
    variables. What am I doing wrong?


    Thanks.
    Tags: php parameter ?
    • Ed Seedhouse
      #2
      Re: How to Use HTML Parameters in PHP?

      On Sat, 03 Jan 2004 20:26:08 -0800, xmp333 wrote:
      [color=blue]
      > I'm trying to create a page where clicking on a link will go to a php
      > page and pass it parameters so it can determine which link was
      > clicked. I don't want to use any client side scripting for this, so
      > making the link act as a submit button via javascript won't do.
      > Unfortunately, this isn't working. Here is the sample code.
      > First the page with the links:
      >
      > <html>
      > <body>
      > <a href="dest.php? link=Link1">Lin k 1</a>
      > <a href="dest.php? link=Link2">Lin k 2</a>
      > </body>
      > </html>[/color]

      So clicking on either link will send a value to the action page.
      That value will be in the variable "link".
      [color=blue]
      > And the php script:
      >
      > <html>
      > <body>
      > <? if ($_GET['Link1'])[/color]

      There won't be anything in there because you didn't pass a variable
      named 'Link1' you passed a variable named 'link'.

      The paramater is passed as "link" not as "Link1" or "Link2". The
      value of $_GET['link'] will contain either "Link1" or "Link2"
      depending on what link was clicked.

      The value of $_GET['Link1'] will always be null the way you wrote the
      code.

      Ed

        Comment

        • Dan Tripp
          #3
          Re: How to Use HTML Parameters in PHP?

          Ed Seedhouse wrote:
          [color=blue]
          > On Sat, 03 Jan 2004 20:26:08 -0800, xmp333 wrote:
          >
          >[color=green]
          >>I'm trying to create a page where clicking on a link will go to a php
          >>page and pass it parameters so it can determine which link was
          >>clicked. I don't want to use any client side scripting for this, so
          >>making the link act as a submit button via javascript won't do.
          >>Unfortunately , this isn't working. Here is the sample code.
          >>First the page with the links:
          >>
          >><html>
          >><body>
          >><a href="dest.php? link=Link1">Lin k 1</a>
          >><a href="dest.php? link=Link2">Lin k 2</a>
          >></body>
          >></html>[/color]
          >
          >
          > So clicking on either link will send a value to the action page.
          > That value will be in the variable "link".
          >
          >[color=green]
          >>And the php script:
          >>
          >><html>
          >><body>
          >><? if ($_GET['Link1'])[/color]
          >
          >
          > There won't be anything in there because you didn't pass a variable
          > named 'Link1' you passed a variable named 'link'.
          >
          > The paramater is passed as "link" not as "Link1" or "Link2". The
          > value of $_GET['link'] will contain either "Link1" or "Link2"
          > depending on what link was clicked.
          >
          > The value of $_GET['Link1'] will always be null the way you wrote the
          > code.
          >
          > Ed[/color]


          You'd probably want to do something in your script like:

          == start ========
          <html>
          <body>
          <?
          if ($_GET['link']=="Link1"){
          echo "Link 1 Clicked";
          } else {
          echo "Link 2 Clicked";
          }
          ?>
          </body>
          </html>
          == end =========

          If you have more than two links, it'd be good to use a switch statement.
          PHP: switch - Manual
          http://www.php.net/manual/en/control-structures.switch.php
          switch


          Regards,

          - Dan
          dantripp.com

            Comment

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