posting map information from a form

[geroido]

Hi

I was wondering if anyone can help me with this problem. I have a map of ireland on my web page with individual clickable counties.  When the user clicks on a particular county, I want to capture that choice so that I can trawl through a database to display the relevent options for that county. I'm having a problen doing this so far. What attribute of the map tag can I post from a form to another page to know the user choice and work from there. Any ideas

[anon_login_001]

Can you provide a link to the page in question, or sample code?

 

Is the image already set up as an Image Map?

 

If so, is there a reason you need to post a form, rather than just create links in the Image Map such as

 

   

/counties_handler.php?county_chosen=7

 

...and use 

$_GET['county_chosen']

  in  counties_handler.php  to see which county was chosen?

[geroido]

Hi anon_login_001

Thanks for the reply. I can supply you with the code at the moment but I know it doesn't work. It's a bit confused. As I say I have 32 clickable areas on my map image. When the user clicks a particular area, I want to send them to another page. No matter which of the 32 areas are clicked, I want to send the users to the same page. But I need to know which area they clicked so that I can use a simple include statement on the next page to provide them with an individual county map so that they can further click on an individual town. Then I intend to trawl through my database to bring up restaurants in that particular town. If I can't determine which area they choose then I'll need to have 32 seperate pages and I don't want that. When they click on county Dublin, for example, they are directed to the same page as everyone else but I can show this user a map of Dublin and another user whatever county they clicked on. I hope this is not too confusing. can you help?

 

<?php

session_start();?>

<h2>You have chosen <font size="6" color="red"><?print $_SESSION['userchoice'];?> </font>from Order online.<BR><BR>

Please select your location from the map below</H2><BR>

<?print "<p>Welcome, your session ID is ".session_id()."</p>\n\n";

?>

<form id="form2" method="post" action="carlow.php">

<TABLE align="center">

<TR>

<TD>

<img src="images/EireMap Blank Small.gif" usemap="#EireMap Blank Small" alt="A map of Ireland" Border="0" />

<map  name="EireMap Blank Small">

<area shape="polygon" alt="Wicklow" coords="305,300,316,281,324,280,329,280,343,280,349,301,350,314,342,326,342,334,334,328,322,330,314,344,308,333,315,333,319,321,310,317,300,315,295,308,296,303" href="carlow.php" title="Wicklow" />

<area shape="polygon" alt="Antrim" coords="309,24,327,107,339,112,347,109,356,101,354,96,357,85,371,79,367,76,353,54,350,53,347,45,339,40,345,28,340,24,330,24,325,20" href="carlow.php" title="Antrim" />

<area shape="polygon" alt="Carlow" coords="297,319,306,322,308,322,312,326,312,330,308,330,308,328,302,327,299,328,299,336,307,344,300,344,299,350,291,354,285,373,284,360,280,355,280,349,274,341,271,339,272,335,276,335,281,330,283,325,290,327"  href="carlow.php" title="Carlow" />

<area shape="polygon" alt="Dublin" coords="325,234,334,231,336,227,343,233,343,237,339,240,339,243,342,243,338,247,340,249,342,251,339,257,335,262,340,269,344,269,342,275,338,275,334,275,331,275,328,273,323,273,317,275,316,271,317,264,318,258,320,256,326,250,327,245" href="carlow.php" title="Dublin" />

<area shape="polygon" alt="Meath" coords="253,204,261,209,266,206,282,208,287,204,283,197,290,196,298,192,305,199,309,211,313,211,320,216,333,218,332,226,326,227,319,230,316,237,319,243,324,243,324,248,317,250,314,254,302,250,294,251,290,250,286,250,282,246,273,246,273,251,271,253,266,252,269,249,272,247,277,244,278,238,280,231,281,224,275,217,268,219,258,215" href="carlow.php" title="Meath" />

<area shape="polygon" alt="Kilkenny" coords="232,333,241,335,250,332,252,326,261,323,268,331,271,331,268,338,272,345,280,359,284,373,279,383,276,391,271,396,267,394,263,394,259,397,255,392,250,390,247,380,241,375,243,369,240,358,237,351,232,342" href="carlow.php" title="Kilkenny" />

<area shape="polygon" alt="Wexford" coords="298,357,290,373,287,376,285,377,286,382,286,386,281,392,281,397,286,400,285,403,294,397,296,399,299,401,303,403,311,406,316,403,321,404,322,406,326,406,326,401,324,397,315,387,317,380,321,384,324,384,325,379,337,362,334,351,336,346,339,339,335,335,329,335,326,335,323,341,317,347,310,348,307,348" href="carlow.php" title="Wexford" />

<area shape="polygon" alt="Kildare" coords="275,256,280,251,289,257,296,255,313,258,312,274,309,282,305,290,298,297,291,302,291,312,295,317,289,321,284,321,282,311,273,305,276,300,277,293,271,288,277,279,275,276,280,268,278,264" href="carlow.php" title="Kildare" />

<area shape="polygon" alt="Offaly" coords="205,263,198,270,204,278,198,285,206,290,206,303,200,317,201,321,210,313,210,307,219,307,227,296,223,287,234,281,243,279,251,279,252,287,269,280,269,274,274,267,272,262,261,257,247,267,236,267,230,263,229,257,225,257,217,265" href="carlow.php" title="Offaly" />

<area shape="polygon" alt="Laois" coords="224,310,225,304,232,295,229,289,235,288,241,284,247,283,247,290,267,290,270,297,266,307,277,314,278,326,273,328,269,327,264,321,260,317,250,321,246,326,241,330,236,330,233,326,226,329,223,326,223,321,227,318" href="carlow.php" title="Laois" />

<area shape="polygon" alt="Waterford" coords="210,433,206,433,203,431,198,426,196,418,190,414,188,414,191,410,201,409,218,409,220,403,217,396,219,391,247,393,256,402,261,402,268,400,270,404,275,403,276,409,274,412,269,407,259,412,251,412,236,413,234,417,228,418,225,422,226,427,229,427,224,432,218,432,217,436" href="carlow.php" title="Waterford" />

<area shape="polygon" alt="Westmeath" coords="250,208,259,220,266,223,270,226,276,224,276,232,269,241,262,247,257,250,245,261,239,260,235,258,233,253,229,249,223,252,216,258,208,258,205,250,207,240,217,241,227,239,232,231,238,219,244,215" href="carlow.php" title="Westmeath" />

<area shape="polygon" alt="Longford" coords="245,207,245,209,241,209,234,217,231,224,224,233,220,235,215,235,213,233,205,233,204,235,201,230,199,223,212,203,218,199,220,194,226,190,229,189,235,197,237,198" href="carlow.php" title="Longford" />

<area shape="polygon" alt="Cavan" coords="200,151,200,148,208,141,211,149,226,155,238,164,246,161,254,167,264,170,273,170,286,184,289,188,291,189,287,190,279,190,277,193,278,204,269,202,262,202,258,203,254,200,247,202,244,202,243,196,241,192,236,192,233,187,234,180,237,173,235,171,230,170,219,162,213,162,209,155" href="carlow.php" title="Cavan" />

<area shape="polygon" alt="Louth" coords="310,173,325,173,332,168,341,175,335,178,330,173,321,176,323,182,322,188,324,193,331,195,331,204,334,205,330,211,320,210,313,205,311,205,308,197,306,191,303,190,308,186,305,185,309,183" href="carlow.php" title="Louth" />

<area shape="polygon" alt="Down" coords="331,117,343,117,348,115,355,112,356,110,361,101,371,94,376,94,381,94,389,106,391,116,391,125,389,129,387,123,389,115,387,107,382,102,379,101,373,102,372,108,378,119,375,128,375,132,383,131,385,138,377,142,369,140,363,142,360,145,358,161,350,170,345,166,339,165,332,158,328,152,328,139,326,131,326,127,329,125" href="carlow.php" title="Down" />

<area shape="polygon" alt="Armagh" coords="328,164,321,168,319,169,310,168,304,164,306,158,300,154,295,152,293,148,290,140,290,134,294,127,301,126,301,121,310,114,319,107,322,111,325,113,326,119,320,123,320,130,320,133,321,138,322,143,321,153" href="carlow.php" title="Armagh" />

<area shape="polygon" alt="Derry" coords="254,43,249,47,249,56,254,57,259,62,267,68,275,68,281,70,283,76,281,80,294,84,301,92,301,95,305,90,312,90,315,67,306,40,303,35,307,29,301,26,293,31,286,30,281,28,281,35,276,43,273,47,267,48,265,45,261,45" href="carlow.php" title="Derry" />

<area shape="polygon" alt="Monaghan" coords="264,133,272,128,272,124,278,129,284,136,286,146,291,156,295,158,303,167,306,174,305,177,301,182,300,187,294,185,290,183,288,177,281,172,277,168,277,165,268,163,264,164,261,161,256,160,260,151,264,148,266,145,268,142" href="carlow.php" title="Monaghan" />

<area shape="polygon" alt="Tyrone" coords="244,58,251,63,256,63,264,72,277,75,277,85,290,87,295,93,297,99,311,95,317,95,319,100,306,109,298,117,296,121,289,125,287,129,278,120,270,120,265,127,262,131,255,127,251,123,252,118,237,119,232,115,237,111,238,103,225,96,222,93,213,91,211,88,216,88,223,88,231,86,236,80,240,74,246,67" href="carlow.php" title="Tyrone" />

<area shape="polygon" alt="Donegal" coords="253,3,257,6,260,6,264,15,270,16,278,19,273,23,261,30,257,36,250,39,245,46,244,51,243,52,240,55,240,60,241,65,230,76,229,81,221,83,219,84,216,80,208,81,205,86,207,95,213,99,220,99,213,103,204,105,200,111,194,111,187,109,187,104,192,102,196,97,195,93,192,91,186,93,183,95,179,91,176,93,170,93,165,93,161,94,158,93,152,93,149,88,150,83,154,80,160,81,173,82,173,77,169,73,165,71,172,71,182,71,186,67,185,62,178,65,181,60,177,58,177,54,176,51,172,51,178,46,183,41,182,35,194,34,204,26,204,23,208,29,208,33,218,35,219,29,215,22,221,29,223,31,223,38,229,38,230,32,230,27,227,19,222,21,229,16,233,30,235,32,232,39,229,41,229,44,230,45,226,54,232,54,242,45,244,43,244,32,242,26,241,20,241,14,250,14,251,12,251,14,259,15,260,11" href="carlow.php" title="Donegal" />

<area shape="polygon" alt="Leitrim" coords="171,121,179,118,186,118,201,136,201,139,195,144,195,152,200,156,206,160,214,167,224,171,228,177,226,184,218,189,215,195,215,198,207,197,205,191,199,185,194,184,197,172,199,165,199,162,190,160,184,156,180,153,177,149,177,143,176,138,174,135,174,128" href="carlow.php" title="Leitrim" />

<area shape="polygon" alt="Sligo" coords="168,120,164,126,156,129,153,131,161,129,163,131,166,135,169,141,163,143,160,143,164,148,160,151,154,150,149,146,150,142,144,141,140,144,135,143,126,139,124,140,121,149,118,153,125,151,129,155,133,159,129,165,128,171,136,174,135,176,144,175,150,172,157,173,158,179,160,182,163,184,166,185,169,182,169,177,173,173,177,168,181,168,185,163,182,160,179,159,175,154,171,150,171,142,170,137,169,133,169,129" href="carlow.php" title="Sligo" />

<area shape="polygon" alt="Roscommon" coords="189,165,194,165,194,170,192,177,191,185,192,188,198,191,202,197,205,200,206,202,198,215,195,224,195,229,199,239,201,250,202,259,197,263,193,268,186,267,188,260,185,258,180,253,180,246,179,240,179,230,175,226,174,222,174,218,167,214,163,210,158,210,149,213,140,218,150,208,149,201,147,198,150,195,154,190,151,186,151,183,156,183,159,188,167,190,174,185,174,180,178,175,181,173" href="carlow.php" title="Roscommon" />

<area shape="polygon" alt="Mayo" coords="57,210,58,215,64,219,70,222,81,223,86,228,96,227,102,234,106,238,111,237,116,233,118,228,122,223,126,217,134,218,139,212,143,211,144,207,144,202,142,199,148,192,146,186,146,182,150,179,152,179,141,182,136,182,130,177,126,176,121,173,123,166,123,161,127,160,123,158,117,159,111,153,108,148,108,144,105,136,99,135,96,137,92,135,83,135,78,133,72,133,66,131,68,138,66,139,63,139,63,145,56,147,55,143,57,141,54,137,51,135,49,139,47,147,42,156,49,148,51,143,58,149,57,150,58,156,58,158,53,161,56,162,63,157,62,163,60,168,62,172,66,178,67,184,63,184,59,178,51,170,46,171,35,172,38,176,45,177,45,180,51,183,53,186,61,188,70,185,83,187,84,193,80,194,79,202,60,202" href="carlow.php" title="Mayo" />

<area shape="polygon" alt="Galway" coords="139,221,128,222,123,225,122,231,118,239,108,243,99,240,95,233,86,232,76,228,63,226,48,225,50,231,46,229,40,228,35,228,44,233,44,236,40,235,45,239,39,243,36,244,44,247,48,251,53,249,56,246,59,246,62,249,60,253,55,257,61,260,66,260,72,253,72,251,76,250,74,256,81,249,80,255,80,259,77,262,76,268,81,264,80,269,88,271,97,271,112,271,119,266,128,267,128,269,125,273,134,273,128,279,128,285,124,284,122,282,117,285,125,289,131,295,133,304,146,300,159,301,162,305,168,305,172,306,177,297,181,294,189,283,196,279,198,277,194,274,182,270,179,259,175,248,173,231,167,227,168,222,161,216,156,216,150,220" href="carlow.php" title="Galway" />

<area shape="polygon" alt="Clare" coords="103,285,94,298,94,301,92,304,86,309,90,309,95,308,97,312,86,319,86,327,84,327,84,333,82,334,72,334,72,340,67,344,50,355,57,354,65,354,66,349,76,348,76,343,85,349,94,350,100,348,95,353,101,350,107,350,111,348,113,343,115,343,119,335,125,330,125,333,124,341,134,343,140,343,145,345,150,344,153,342,157,338,159,332,160,327,161,323,164,320,164,315,172,315,171,310,162,310,155,304,152,304,142,304,137,309,129,308,128,302,127,297,122,293,118,288" href="carlow.php" title="Clare" />

<area shape="polygon" alt="Tipperary" coords="192,287,185,297,184,300,180,300,176,309,177,318,168,320,165,325,165,332,165,336,161,339,164,344,176,344,183,346,185,349,183,355,181,371,174,371,170,373,170,375,175,378,183,384,186,387,185,391,186,400,186,404,189,406,195,405,201,401,205,401,207,404,214,405,212,398,212,392,214,385,220,384,222,387,234,387,241,388,242,383,238,379,235,375,238,370,235,358,232,351,226,344,222,338,222,331,217,325,217,321,219,318,222,316,218,311,214,312,213,318,204,324,201,325,196,324,194,317,194,314,196,313,200,300,202,292" href="carlow.php" title="Tipperary" />

<area shape="polygon" alt="Limerick" coords="159,342,158,348,147,349,141,349,141,351,135,350,135,348,124,349,121,352,121,354,119,353,118,355,112,355,111,353,102,356,95,360,97,368,97,371,95,378,96,383,95,386,102,391,108,388,116,390,123,389,130,385,139,384,145,386,150,390,152,394,158,395,170,393,176,394,182,396,180,389,176,384,164,377,165,367,170,367,175,365,176,364,179,350,169,349" href="carlow.php" title="Limerick" />

<area shape="polygon" alt="Cork" coords="208,437,203,443,199,447,196,447,195,453,189,455,184,457,177,456,182,449,184,445,180,443,177,445,174,444,169,444,163,443,168,448,169,453,170,458,170,461,163,468,147,466,155,471,152,477,149,475,145,476,142,471,140,474,138,476,141,480,137,484,128,478,123,480,124,483,122,486,107,485,104,484,101,487,95,493,91,492,88,485,80,486,70,489,67,490,65,489,57,494,51,492,73,478,72,476,54,483,72,474,78,470,81,467,81,464,77,462,94,451,94,440,108,435,108,432,102,429,105,421,99,401,104,395,110,393,122,396,127,392,136,388,143,390,150,399,164,401,170,398,181,401,185,409,182,415,185,418,192,423,195,430" href="carlow.php" title="Cork" />

<area shape="polygon" alt="Kerry" coords="93,360,85,357,70,359,69,365,71,368,64,368,57,375,48,375,56,378,54,390,63,396,53,397,43,398,38,393,33,396,33,398,29,397,29,391,15,397,15,401,10,401,7,411,1,413,9,411,22,409,27,411,38,410,52,407,60,409,57,413,52,413,46,415,38,422,29,425,10,440,14,443,16,450,27,444,26,455,31,457,66,444,72,445,61,450,55,454,55,458,49,458,42,462,41,466,33,469,20,478,37,477,48,470,59,469,61,460,72,458,88,450,90,436,95,434,101,433,97,428,100,422,94,400,97,393,88,388,90,381,92,380,92,375,92,369" href="carlow.php" title="Kerry" />

<area shape="polygon" alt="Fermanagh" coords="192,119,198,116,203,115,206,112,213,109,218,108,222,104,224,102,229,106,233,108,231,113,226,117,230,122,235,123,240,125,247,125,252,132,258,136,260,143,258,147,255,153,255,156,252,157,246,156,238,158,235,156,228,149,224,149,213,144,209,137,203,132" href="carlow.php" title="Fermanagh" />

</map></TR></form></TABLE>

[geroido]

Hi

just to clarify what I mean because it is a bit confusing. I know that I can direct the user with the individual href statement but I want the href statement to send the users to the same page regardless of which county on the map they clicked. It is on that page that I want to determine what they clicked so that I can just put an include statement half way down the page to display a particular county map for a particular user.

[anon_login_001]

Well, you're halfway there!

You know more about your database structure than me (obviously?) so I'll give a basic example of a simple solution, that hopefully you can apply in your own environment.

 

In my database, I'd probably have my list of counties, each with their own ID, 1..25 or so.

 

You could simply change the links in the map so that they look like

 

href="carlow.php?c=12" title="Wicklow"

 

Where the ID for Wicklow is "12".  I used 'c' as the parameter as a short for "county", but you could use whatever you wanted.

 

On the carlow.php page, in my example, you could simply check the value of

$_GET['c']

which would be '12' if they clicked on the Wicklow link.

 

From there, you would probably use a Switch Statement to detirmine which file to include, such as:

 

switch ( $_GET['c'] ) 
{
 case '12': 
 include( 'wicklow_content.php' );
 break;

 case '13':
 include ....
 ....
}

 

See what I mean?

 

For more information, look up using  $_GET, Query Strings, their Paremeters, etc.

[geroido]

Hi

That looks very promising. I have to go now but will look at it later. Thanks a lot for you're time. Can I get back to you later if I have any problems? This bit is really the whole crux of my website.

[anon_login_001]

Welcome!