text matching, $FILE(), arrays

tcharlesyun

I am having trouble getting a conditional to respond to text in an array. I hope that the comments in the code below explain what I am trying to do and where I am encountering problems. Any help is appreciated.

<! start example>
<! ------------------------------------------------------->
<?php
$file = file("sample.txt"); // the file to be read
$line_count = 0; // the line count of the file to being read
$line_contents = ""; // contents of the line being analysed
$display_count = 0; // the count for the lines displayed in the conditional
$line_print = ""; // line that is printed
$array[0] = ""; // set array[0] to null so that conditional will work

while ($display_count < 15) {
	//  note: i want to change the conditional to be able to detect EOF
	//  a statement like:
	//       while (!=EOF) { do stuff };

	$line_contents = $file[$line_count];
	$array = explode( ";", $line_contents );
	$line_print = $array[0] . "|" . $array[1] . "|" . $array[2];


	//echo "<br>" . $line_print;
	// i can get the above line to print, but i can not get 
	// the below conditional to work  

	// the following is the conditional that should display
	// the parsed text only if the first array item matches
	// the conditional.  
	if ($array[0]="show") {
		echo "<br>" ;
		echo $line_print;
		$display_count++;
	}

	$line_count++;
	echo $line_print;

}

/* contents of sample.txt

show ; one ; two
dont show ; 3 ; 4
show ; 5 ; 6
dont show ; 7 ; 8
show ; 9 ; 10
dont show ; a ; l
show ; b ; m
dont show ; c ; n
show ; d ; o
dont show ; e ; p
show ; f ; q
dont show ; g ; r
show ; h ; s
dont show ; i ; t
show ; j ; u
dont show ; k ; v
end ;end ; end

*/
?>

<! ------------------------------------------------------->
<! end of example>

Anon

replace:

if ($array[0]="show") {

with:

if (!strcasecmp($array[0],"show")) {

tcharlesyun

Brandon,

Thanks for the advice. I tried a straight replace and unfortunately am still having some trouble. I will play around a bit more to see if I am missing something.

btw, the errors that i am getting:

: Warning: Undefined offset: 17 in : d:\candy\netcandy\tcy\proto007\h2\parse25.tcy on line 14
:
: Warning: Undefined offset: 1 in d:\candy\netcandy\tcy\proto007\h2\parse25.tcy on line 16
:
: Warning: Undefined offset: 2 in d:\candy\netcandy\tcy\proto007\h2\parse25.tcy on line 16
||

tcharlesyun

The following ended up solving the text matching problem, but I am not sure why. I ended up using the suggested STRCASECMP() function, but had to modify the conditional from "=" to "<"

I have no idea why this was needed. However, it provided a solution one of my two problems. The next goal is to figure out how to autodetec the EOF when using FILE(). I will prob re-post this as a question in a few days.

Thanks again to Brandon for the suggestion. Thanks in advance to anyone who can tell me what is going on in my code. [and I must admit that it is really frustrating to have something work and not know why...]

Charles

</body>

while ($display_count < 5) {
	// note: i want to change the conditional to be able to detect EOF
	// a statement like:
	// while (!=EOF) { do stuff };

	$line_contents = $file[$line_count];
	$array = explode(";",$line_contents);
	$line_print = $array[0] . "|" . $array[1] . "|" . $array[2];

	if ( (strcasecmp($array[0],"show") < 0) ) {
		echo "<br> from conditional" ;
		echo $line_print;
		$display_count++;

	}

	$line_count++;

}

<! ** See previous post for contents of "SAMPLE.TXT" file >

<! ------------------------------------------------------->
<! end of example>

</body>

tcharlesyun

I got the script working. Had a few problems determining the diff between "=" and "==" (and i still am not sure that I know when to use each). However, the following script does everything I want.

I can now read from a list, print out various lines based on a match variable

<tr> <td colspan=01 align=center valign=top bgcolor="#dddddd"><img src="../grpimg/cleardot.gif" height=001 width=001"></td>
<td colspan=01 align=right valign=top bgcolor="#abcdef">
<! ------------------------------------------------------->
<?php
$file = file("../grpmenu/sample.txt"); // the file to be read
$line_count = 0; // the line count of the file to being read
$line_contents = ""; // contents of the line being analysed
$display_count = 0; // the count for the lines displayed in the conditional
$display_anything = 0; // Toggle this to 1 (one) once something is shown in the meu
$line_print = ""; // line that is printed
$array[0] = ""; // set array[0] to null so that conditional will work
// term to match
if ( isset($l) ) {
$match = $l; // this sets the match variable to the value sent via URL encoding
echo "<font size=-1>" . strtoupper($match) . "</font>";
while ($display_count < 5) { // note: i want to change the conditional to be able to detect EOF
// a statement like: while (!=EOF) { do stuff };

			$line_contents = $file[$line_count];
			$array = explode(";",$line_contents);
			$array[0] = chop($array[0]);	//removes trailing whitespace
			$array[1] = chop($array[1]);
			$array[2] = chop($array[2]);
			$line_print = $array[1];

			/* 
			------------------------
			   The following lines determin what is printed.  If there is a
			   match, then a parsed section of the line is printed.
			   If the entire list is read and there are no matches, then
			   you get an error msg saying that there are no selections.
			   If the list is read and there are some selections, they
			   are read until the end of the file.

			   note: end of file is determined by a string in the file
			   that is tagged as end.
			------------------------
			*/
			if ( (strcasecmp($array[0],"$match") == 0) ) {
				echo "<br>" . $line_print;
				$display_count++;
				$display_anything = 1;
			}

			if ( (strcasecmp($array[0],"end") == 0) && ($display_count < 1) ) {
				$display_count = 6;
				echo "<br>	no selections:";
			}

			if ((strcasecmp($array[0],"end") == 0)) {
				$display_count = 6;
			}

			$line_count++;
			unset ($array);
		} //end while
	} else { 
		echo "<font size=-1>OPTIONS</font>";
		echo "<br>	none:";
	} //end if-else

	echo "<br>";
?>

<! Contents of sample.txt >
climb ; one -; two
rant ; second -;asdf
climb ; 7 -; 8
climb ; c -; n
vitae ; e -; p
climb ; 3 -; 4
vitae ; g -; r
vitae ; i -; t
vitae ; k -; v
rant ; asdf -; asdf
climb ; a -; l
rant ; asdf -; asdf
vitae ; what -; two
vitae ; winding -; two
end ; end ; end
<----------------------------------------------------- -->
</td>
<td colspan=01 align=center valign=top bgcolor="#abcdef"><img src="../grpimg/cleardot.gif" height=001 width=005"></td>

</table>
</center>