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webstar Newbie

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Ok I will first say I know very very very little php and this is confusing me. This script was made for me and worked until this year and I can't figure it out.

 

It reads from this page. http://www.mto.gov.on.ca/english/traveller/conditions/rdclosure.htm  and pretty much need to reads just the parts between.

<!-- TemplateBeginEditable name="content" --> and </DIV> on the HTML below.  Problem is this year it started doing this.

 

Reading "http://www.mto.gov.on.ca/english/traveller/conditions/rdclosure.htm". Searching for "

"..."

". Searching for "". Number of current events = 1 Number of old events = 0

Fatal error: Cannot use string offset as an array in C:\WEATHERSCRIPTS\mto\test\roadclosed.php on line 44

 

And they changed the webpage and I can't figure out how to fix it. I've been trying to for 4 days now when I get time off work. I figure it is something really easy but not knowing PHP it isn't going to be easy for me to find.

 

I've tried changing the part of the code but with no luck either.  I hope someone can help.

 

CHANGES I HAVE TRIED

$content = find_data($webpage, "TemplateBeginEditable name=\"content\"", "</DIV>");  // All content is in the <DIV></DIV>
$content = find_data($content, "<TABLE BORDER", "</TABLE>");     // Look for the events HTML table

 

 

PHP SCRIPT(with the emails removed)

<?php
// Declare variables //
$debug = true;
$url = "http://www.mto.gov.on.ca/english/traveller/conditions/rdclosure.htm";
//$url = "./roadclosed1/rdclosure.htm";
#$email_recip = "email1";
$email_recip = "email2";
#$email_subject = MOVED TO LINE 47
$email_from = "WxServer Roads";
$email_from_addr = "Email3";
$message_header = "\n====START====\n";
$message_footer = "\n\n http://www.mto.gov.on.ca/english/traveller/conditions/rdclosure.htm";
$eventfilename = "roadclosed.txt";

// DON'T EDIT PAST HERE UNLESS YOU KNOW WHAT YOU'RE DOING //
// MAIN PROGRAM ///
$webpage = read_web($url);
$content = find_data($webpage, "<DIV>", "</DIV>");  // All content is in the <DIV></DIV>
$content = find_data($content, "<TABLE BORDER", "</TABLE>");     // Look for the events HTML table
$curr_events = read_html_table($content,true);       // Parse the events HTML table
$old_content = read_events_file();            // Read the old events HTML table
if ($old_content) {
  $old_events = read_html_table($old_content, true);    // Parse the old events HTML table
} else {
  unset($old_events);
}
if ($debug) { print("Number of current events = " . count($curr_events) . "\n"); }
if ($debug) { print("Number of old events = " . count($old_events) . "\n"); }

//Go through the current events and look for a corrisponding old event
$send_email = false;     // Flag used to see if an email should be sent for new closure events
$event_message = $message_header;
for ($curr_event_num = 0; $curr_event_num < count($curr_events); $curr_event_num++) {
  $curr_event_found = false;
  for ($old_event_num = 0; $old_event_num < count($old_events); $old_event_num++) {
    if ($debug) { print("Comparing (" . $curr_events[$curr_event_num][0] . "?" . $old_events[$old_event_num][0] . ") & (" . $curr_events[$curr_event_num][1] . "?" . $old_events[$old_event_num][1] . ") & (" . $curr_events[$curr_event_num][2] . "?" . $old_events[$old_event_num][2] . ")\n"); }
    if (($curr_events[$curr_event_num][0] == $old_events[$old_event_num][0]) && ($curr_events[$curr_event_num][1] == $old_events[$old_event_num][1]) && ($curr_events[$curr_event_num][2] == $old_events[$old_event_num][2])) {
      // Found a matching event
      $curr_event_found = true;
    }
  }
  if (!$curr_event_found) {    // Add the not found current event to the message
     $send_email = true;
     if ($debug) { print ("Found a new event: \nRegion: " . $curr_events[$curr_event_num][1] . " \nHighway(s): " . $curr_events[$curr_event_num][0] . " \nReason: " . $curr_events[$curr_event_num][2] . "\n=====END=====\n"); }
//     $event_message .= ">>> NEW <<<\n";
     $event_message .= "Region: " . $curr_events[$curr_event_num][1] . "\nHighway(s): " . $curr_events[$curr_event_num][0] . "\nReason: " . $curr_events[$curr_event_num][2] . "\n====END====\n";
     $email_subject .= " Hwy: " . $curr_events[$curr_event_num][0];

  } else {
//    if ($debug) { print ("Found a previously sent event:\nRegion: " . $curr_events[$curr_event_num][1] . "\nHighway(s): " . $curr_events[$curr_event_num][0] . "\nReason: " . $curr_events[$curr_event_num][2] . "\n====END====\n"); }
//    $event_message .= "Region: " . $curr_events[$curr_event_num][1] . "\nHighway(s): " . $curr_events[$curr_event_num][0] . "\nReason: " . $curr_events[$curr_event_num][2] . "\n====END====\n";

}
}
$event_message .= $message_footer;




//Send an email if there is a new event
//Send an email if there is a new event 
if ($send_email and !preg_match('/there\s*are\s*no\s*reported\s*closures/i', $event_message)) { 
print ("Sending the message below to " . $email_recip . ", from \"" . $email_from . "\" <" .$email_from_addr . ">.\n" . $event_message . "\n");
  mail ($email_recip, $email_subject, $event_message, "From: \"" . $email_from . "\" <" .$email_from_addr . ">");
  print ("Found a new event:\nRegion: " . $curr_events[$curr_event_num][1] . "\nHighway(s): " . $curr_events[$curr_event_num][0] . "\nReason: " . $curr_events[$curr_event_num][2] . "\n==========\n");
}


//Save the events to check the next time the script is run
write_events_file($content);

// Functions //
//read_web - Read the web page
//           $strURL ==> URL of the webpage
function read_web($strURL)
{
  global $debug;
  $buffer = "";
  if($debug){ print("Reading \"$strURL\".\n"); }
  $fh = fopen($strURL, "rb");
  if ($fh === false) {
    return "";
  }
  while (!feof($fh)) {
    $buffer .= fread($fh, 1024);
  }
  fclose($fh);
  return $buffer;
} // end function read_web

// find)data - Gets a substring of the webpage by scraping the data
//             $strFile ==> text of the webpage
//             $strStart_Pattern ==> start of the substring
//             $strEnd_Pattern ==> end of the substring
function find_data($strFile,$strStart_Pattern,$strEnd_Pattern, $intStart_Position = 0)
{
  global $debug;
  if($debug){ print("Searching for \"$strStart_Pattern\"...\"$strEnd_Pattern\".\n"); }
  $first_match = strpos($strFile,$strStart_Pattern, $intStart_Position);
  if ($first_match) {
    # find the begining of the tag
    for ($i = $first_match; $i>0;$i--) {
      $char = $strFile[$i];
      if ($char == "<" ) {
        $first_match = $i; //record the location of the tag
        break;
      }
    }
    $partialbuffer = substr($strFile,$first_match,strlen($strFile) - $first_match);
    # find the end of the sub string
    $second_match = strpos($partialbuffer,$strEnd_Pattern);
    return substr($partialbuffer,0,$second_match + strlen($strEnd_Pattern));
  } else {
    return(false);
  }
} //end function find_data

// read_html_table - Read the contents of an HTML table and return the array(s)
//                   strHTMLTable ==> HTML table text
//                   boolSkipFirstRow ==> Skip the first row if it contains column titles (true/false)
function read_html_table($strHTMLTable, $boolSkipFirstRow)
{
  global $debug;
  $table = "";
  $th = "";
  $td = "";
  if($boolSkipFirstRow) {
    $rownum = -2;
  } else {
    $rownum = -1;
  }
  $rowopen = false;
  $strPos = 0;
  do {    // Scrape through the table
    if (strtoupper(substr($strHTMLTable, $strPos, 3)) == "<TR") {  //Look for the rows
      $strPos +=3;
      $strPos = strpos($strHTMLTable, ">", $strPos) + 1;       // Find the end of the row open tag
      $rowopen = true;
      $rownum++;
    }
    if (strtoupper(substr($strHTMLTable, $strPos, 5)) == "</TR>") {
      $rowopen = false;
      $strPos += 5;    // jump to the end of the close tag
    }
    if (strtoupper(substr($strHTMLTable, $strPos, 3)) == "<TH") { // Look for headers
      $strPos += 3;
      $strPos = strpos($strHTMLTable, ">", $strPos) + 1;       // Find the end of the header open tag
      $endPos = strpos(strtoupper($strHTMLTable), "</TH>", $strPos);   // Find the header close tag
      $th[] = substr($strHTMLTable, $strPos, $endPos - $strPos);
      $strPos = $endPos + 5;
      if($debug) { print("Found column header \"" . end($th) . "\" (" . (count($th) - 1) . ")\n"); }
    }
    if (strtoupper(substr($strHTMLTable, $strPos, 3)) == "<TD") { // Look for cells
      $strPos += 3;
      $strPos = strpos($strHTMLTable, ">", $strPos) + 1;       // Find the end of the cell open tag
      $endPos = strpos(strtoupper($strHTMLTable), "</TD>", $strPos);   // Find the cell close tag
      $td[$rownum][] = str_replace(array("\n","\t")," ",substr($strHTMLTable, $strPos, $endPos - $strPos));
      $td[$rownum][count($td[$rownum]) - 1] = str_replace("\r"," ",$td[$rownum][count($td[$rownum]) - 1]);
      $td[$rownum][count($td[$rownum]) - 1] = preg_replace("/[\s]+/"," ",$td[$rownum][count($td[$rownum]) - 1]);
      $strPos = $endPos + 5;
      if($debug) { print("Found cell data \"" . end($td[$rownum]) . "\" (" . $rownum . "|" . (count($td[$rownum]) - 1) . ")\n"); }
    }
    $strPos++;
  } while ($strPos <= strlen($strHTMLTable));
  return $td;
  /*
  if ($boolRowOneColumnTitles) {
    if ($th[0] != "") {        // Create a new array that uses the headers as the array key
      $newtd = "";
      $header = "";
      $row = "";
      if ($debug) { print(count($th) . " headers\n"); }
      if ($debug) { print(count($td) . " rows\n"); }
      for ($row = 0; $row <= count($td) - 1; $row++) {
        for ($cell = 0; $cell <= count($td[$row]) - 1; $cell++) {
          if ($debug) { print("(". $row . "|" . $cell . ") => " . $th[$cell] . "(" . $row . ") = " . $td[$row][$cell] . "\n"); }
          $newtd[$th[$cell]][$cell] = $td[$row][$cell];
        }
      }
      return $newtd;
    } else {  // There are no headers, so just return the td array.
      return $td;
    }
  } else {  // Just return what's in the td array
    return $td;
  }
  */
} //end function readhtmltable

// read_events_file - Reads the old events from event file
function read_events_file()
{
  global $debug;
  $eventfile = "roadclosed.txt";
  $buffer = "";
  if (is_file($eventfile)) {	// Check to see if the event log exists
    $fh = fopen($eventfile, "r");
    while (!feof($fh)) {
      $buffer .= fread($fh, 1024);
    }
    return $buffer;
  }
  return;   // Return an empty array
}  // end function read_events_file

// write_events_file - Writes the current events to a file to be read later
//                   - strEvents ==> array of events
function write_events_file($strEvents)
{
  global $debug;
  $eventfile = "roadclosed.txt";
  $fh = fopen($eventfile, "w");
  if ($fh === false) {
    if ($debug) { print("ERROR: Could not write to \"" . $eventfile . "\"!\n"); }
  } else {
    fwrite ($fh, $strEvents);
    fclose ($fh);
  }
  return;
}  // end function write_events_file

print ("ClosedRoadScript");
print date("     (G:i:s)");
?>

 

HTML SOURCE OF WEBPAGE WITH AN ACTIVE ALERT

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "hmpro6.dtd">
<HTML LANG="en-ca"> 
  <HEAD> <BASE HREF="http://www.mto.gov.on.ca/english/">
 <LINK HREF="http://www.mto.gov.on.ca/css/style.css" REL="stylesheet"
  TYPE="text/css">
 <META NAME="Author" CONTENT="Ontario Ministry of Transportation">

<!-- TemplateBeginEditable name="head" -->
 <META NAME="robots" CONTENT="noindex,nofollow"> 
 <TITLE>Road Closures</TITLE>
<!-- TemplateEndEditable -->
  </HEAD> 
  <BODY BGCOLOR="#ffffff"> 
 <P></P> 
 <TABLE WIDTH="100%" BORDER="0" CELLSPACING="0" CELLPADDING="0"> 
	<TR> 
	  <TD><A HREF="http://www.gov.on.ca/MBS/english/index.html"><IMG
		 SRC="images/ont_head.gif" WIDTH="246" HEIGHT="61" BORDER="0"
		 ALT="Government of Ontario"></A><!-- TemplateBeginEditable 
  name="skipMenu" --><A
		 HREF="traveller/conditions/rdclosure.htm#skipmenu"><IMG SRC="images/bump.gif"
		 HEIGHT="1" WIDTH="1" BORDER="0" ALT="| Skip Navigation Menu |"></A><!-- TemplateEndEditable --></TD>
	  
	  <TD ALIGN="right"><A HREF="index.html"><IMG SRC="images/mto_e.gif"
		 WIDTH="259" HEIGHT="51" BORDER="0" ALT="Ministry of Transportation"></A><BR><A
		 ACCESSKEY="1" HREF="http://www.gov.on.ca/MBS/english/index.html"><IMG
		 SRC="images/central-site.gif" WIDTH="63" HEIGHT="10" BORDER="0"
		 ALT="Government of Ontario Central Site."></A><!-- TemplateBeginEditable 
  name="topFeedback" --><A ACCESSKEY="2" HREF="feedback/mtoinfo.htm"><IMG
		 SRC="images/feedback.gif" WIDTH="54" HEIGHT="10" BORDER="0"
		 ALT="Contact us for questions and comments."></A><!-- TemplateEndEditable --><A
		 ACCESSKEY="3" HREF="search.htm"><IMG SRC="images/search.gif" WIDTH="43"
		 HEIGHT="10" BORDER="0"
		 ALT="Search the Ministry of Transportation Web site."></A><A
		 ACCESSKEY="4" HREF="map.htm"><IMG SRC="images/site-map.gif" WIDTH="52"
		 HEIGHT="10" BORDER="0" ALT="Site map for the ministry Web site."></A><!-- TemplateBeginEditable 
  name="topFrench" --><A ACCESSKEY="5"
		 HREF="/french/traveller/conditions/rdclosure.htm"><SPAN LANG="fr-ca"><IMG
		 SRC="images/francais.gif" WIDTH="48" HEIGHT="10" BORDER="0"
		 ALT="Version française de cette page."></SPAN></A><!-- TemplateEndEditable --></TD>
	  
	</TR> 
	<TR> 
	  <TD COLSPAN="2" STYLE="background-color: #666666"><IMG
		 SRC="images/bump.gif" WIDTH="1" HEIGHT="1" ALT=" "></TD> 
	</TR> 
	<TR> 
	  <TD COLSPAN="2"><IMG SRC="images/bump.gif" WIDTH="1" HEIGHT="3"
		 ALT=" "></TD> 
	</TR> 
 </TABLE> 
 <TABLE WIDTH="100%" BORDER="0" CELLSPACING="1" CELLPADDING="0"> 
	<TR> 
	  <TD CLASS="menuTop"><A HREF="index.html">Home</A></TD> 
	  <TD CLASS="menuTop"><A HREF="about/">About the Ministry</A></TD> 
	  <TD CLASS="menuTop"><A HREF="dandv/">Drivers & Vehicles</A></TD> 
	  <TD CLASS="menuTop"><A HREF="traveller/">Traveller's
		 Information</A></TD> 
	  <TD CLASS="menuTop"><A HREF="trucks/">Trucks & Buses</A></TD> 
	  <TD CLASS="menuTop"><A HREF="safety/">Road Safety</A></TD> 
	</TR> 
	<TR> 
	  <TD CLASS="menuTop"><A HREF="new/">What's New</A></TD> 
	  <TD CLASS="menuTop"><A HREF="engineering/">Highways</A></TD> 
	  <TD CLASS="menuTop"><A HREF="business/">Opportunities</A></TD> 
	  <TD CLASS="menuTop"><A HREF="pubs/">Publications</A></TD> 
	  <TD CLASS="menuTop"><A HREF="sites/sites.htm">Related Links</A></TD> 
	  <TD CLASS="menuTop"><A HREF="faq/">FAQ</A></TD> 
	</TR> 
	<TR> 
    <!-- TemplateBeginEditable name="location" -->
	  <TD CLASS="location" COLSPAN="6">Location: <A
		 HREF="index.html">Ministry Home</A> > <A HREF="traveller/">Traveller's
		 Information</A> > <A HREF="traveller/conditions/">Road Conditions</A> >
		 Road Closures</TD>
    <!-- TemplateEndEditable -->
	</TR> 
	<TR> 
	  <TD COLSPAN="6"><IMG SRC="images/bump.gif" WIDTH="1" HEIGHT="3"
		 ALT=" "></TD> 
	</TR> 
	<TR> 
	  <TD COLSPAN="6" STYLE="background-color: #666666"><IMG
		 SRC="images/bump.gif" WIDTH="1" HEIGHT="1" ALT=" "></TD> 
	</TR> 
 </TABLE> <BR>	

<!-- TemplateBeginEditable name="content" -->
 <DIV CLASS="content"> 
	<H1>Road Closures</H1> 
	<P>Please press the Refresh or Reload button at the top of your screen to
	  see the most recent updates.</P> 
	<P><B>Road closures and unscheduled events</B></P> 
	<P><B>Last updated: October 12th, 2007at 2:20 a.m.</B></P> </DIV> 
 <DIV CLASS="content"> 
	<TABLE BORDER="1" CELLPADDING="2" CELLSPACING="0"> 
	  <TR> 
		 <TH BGCOLOR="#FFFFE6" WIDTH="15%" HEIGHT="33">Highway</TH> 
		 <TH BGCOLOR="#FFFFE6" WIDTH="22%" HEIGHT="33">Area</TH> 
		 <TH BGCOLOR="#FFFFE6" WIDTH="61%" HEIGHT="33" ALIGN="LEFT">Reason for
			closure</TH> 
	  </TR> 
	  <TR> 
		 <TH BGCOLOR="#FFFFE6" WIDTH="15%" HEIGHT="19">401</TH> 
		 <TH BGCOLOR="#FFFFE6" WIDTH="22%" HEIGHT="19">Ottawa</TH> 
		 <TH BGCOLOR="#FFFFE6" WIDTH="61%" HEIGHT="19" ALIGN="LEFT">is closed
			eastbound at Lancaster approximately 11 kilometres west of the Quebec border
			due to a collision. </TH> 
	  </TR> 
	  
	  
	   
	   
	  
	  
	  
	  
	  
	   
	  
	   
	  
	   
	   
	   
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	   
	   
	   
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	   
	   
	   
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  
	  

<!-- BEGIN ROW -->
	</TABLE></DIV> 
 <DIV CLASS="content">  
	<P><SMALL>This information is provided as a public service. Although we
	  endeavor to ensure that the information is as current and accurate as possible,
	  errors do occasionally occur. Therefore, we cannot guarantee the accuracy of
	  the information. Readers should, where possible, verify the information before
	  relying on it.</SMALL></P> 
	<H2 STYLE="font-size:1.1em;">Road information by phone</H2> 
	<P><B>Provincial Call Centre:</B> 1-800-268-4686<BR><B>In GTA:</B>
	  416-235-4686</P> 
	<P><B>Provincial TTY:</B> 1-866-471-8929<BR><B>Niagara Region TTY:</B>
	  905-704-2426</P><HR> 
	<P CLASS="noBottom">See also:</P> 
	<UL CLASS="noTop"> 
	  <LI><A HREF="traveller/conditions/index.html">Winter Road Condition
		 Reports</A></LI> 
	  <LI><A
		 HREF="traveller/compass/camera/pictures/tris/trismain.htm">Central Region
		 Traffic Reports</A></LI> 
	  <LI><A HREF="winter.htm">Winter Driving in Ontario</A></LI> 
	</UL> </DIV> 
  

<!-- TemplateEndEditable -->
 <HR><BR> 
 <DIV CLASS="menuBottom"> |
	<A HREF="http://www.gov.on.ca/MBS/english/index.html">central site</A> | <!-- TemplateBeginEditable name="bottomFeedback" -->
	<A HREF="feedback/mtoinfo.htm">feedback</A>
  <!-- TemplateEndEditable -->
	| <A HREF="search.htm">search</A> | <A HREF="map.htm">site map</A> | <!-- TemplateBeginEditable name="bottomFrench" -->
	<A HREF="/french/traveller/conditions/rdclosure.htm"><SPAN
	LANG="fr-ca">français</SPAN></A>
  <!-- TemplateEndEditable --> | <BR>| <A HREF="index.html">Home</A> |
	<A HREF="about/">About the Ministry</A> | <A HREF="dandv/">Drivers &
	Vehicles</A> | <A HREF="traveller/">Traveller's Information</A> |
	<A HREF="trucks/">Trucks & Buses</A> | <A HREF="safety/">Road Safety</A>
	|<BR>| <A HREF="new/">What's New</A> | <A HREF="engineering/">Highways</A> |
	<A HREF="business/">Opportunities</A> | <A HREF="pubs/">Publications</A> |
	<A HREF="sites/sites.htm">Related Links</A> | <A HREF="faq/">FAQ</A> | 
	<P><IMG SRC="images/wordmark.gif" WIDTH="404" HEIGHT="39"
	  ALT="This site is maintained by the Government of Ontario, Canada."
	  BORDER="0"><BR><BR> © 2003
	  <A HREF="http://www.gov.on.ca/MBS/english/common/queens.html">Queen's Printer
	  for Ontario</A></P> </DIV> </BODY>
</HTML>

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