CODEWITHSUNDEEP
phpvariables
Pulse Designs
Pulse Designs

Reputation: 3

PHP - variables don't change value when they should

I'm having and issue with 2 of my variables in my code. I have an if statement that rests inside a for loop. When the if statement executes in the for loop, my two variables should change accordingly, but they don't. I have no functions in my code, so all the variables are in the global scope.

Here is my code:

$file = file("../../manpages/structure.txt");
$topicindex = 0;
$topiclineindex = 0;
for($x = 0; count($file) > $x; $x++){
    $data = explode(",",$file[$x]);
    $structure[$topicindex][$topiclineindex] = $file[$x];
    echo '[' . $topicindex . ',' . $topiclineindex . ']';
    $topiclineindex += 1;
    if ($data[0] == "ENDTOPIC") {
        echo "NEXT TOPIC";
        $topicindex += 1;
        $topiclineindex = 0;
    }
}
print_r($structure);

This is the output in the browser:

[0,0][0,1][0,2][0,3][0,4][0,5][0,6][0,7]NEXT TOPICArray ( [0] => Array ( [0] => TOPIC,Topic 1 [1] => SUBTOPIC,Sub Topic 1,intro.txt [2] => SUBTOPIC,Sub Topic 2,intro.txt [3] => ENDTOPIC [4] => TOPIC,Topic 2 [5] => SUBTOPIC,Sub Topic 21,intro.txt [6] => SUBTOPIC,Sub Topic 22,intro.txt [7] => ENDTOPIC ) )

And this is the contents of structure.txt

TOPIC,Topic 1
SUBTOPIC,Sub Topic 1,intro.txt
SUBTOPIC,Sub Topic 2,intro.txt
ENDTOPIC
TOPIC,Topic 2
SUBTOPIC,Sub Topic 21,intro.txt
SUBTOPIC,Sub Topic 22,intro.txt
ENDTOPIC

Any and all suggestions are very much appreciated.

EDIT: I've been testing some more, and it seems the newly assigned values don't escape the if statement. On the next iteration of the for loop, $topicindex and $topiclineindex returned to their previous values of the previous iteration before the if statement was excecuted.

Upvotes: 0

Views: 458

Answers (2)

Ilyich
Ilyich

Reputation: 5776

Replace

if ($data[0] == "ENDTOPIC") {

with

if (trim($data[0]) == "ENDTOPIC") {

This will do the trick. Your IF statement is executed only for the last line because the first ENDTOPIC is actually "ENDTOPIC\n"

trim() function strips "\n"

Upvotes: 0

AndreiDMS
AndreiDMS

Reputation: 373

Your IF statement is executed only for the last line because the first ENDTOPIC is actually "ENDTOPIC\n". See http://php.net/manual/en/function.file.php for details about the new line flag

Upvotes: 1

Related Questions