explode function isn't working... any ideas?

[ninjapheret]

I've setup the following code to do some tests for myself on the 'explode' function. Below is the code. Everything works fine, even the first "explode" function. When i try to put the contents into a file, open it up, explode it parsing it with ",", I get nothing as a result.. any help would be appreciated.

Thanks

<?php

$title = $_POST['title'];
$author = $_POST['author'];
$db = "database.txt";
$filename = fopen($db, 'w+');
$book = "$title,$author";

echo "Seperate Variables (\$title and \$author):<br>";
echo "<b>$title<br> $author</b><br><br>";

echo "The string \$book which contains both vars,<br>";
echo "seperated by a comma (no spaces!):<br>";
echo "<b>$book</b><br><br>";

$everything = explode(",", $book);

echo "\$everything Array, Value 1:\n";
echo "<b>$everything[0]</b><br><br>";

echo "\$everything Array, Value 2:\n";
echo "<b>$everything[1]</b>";

echo "<hr><br>";

echo "Attempting to place the \$book data into a comma delimited text file,<br>reopen it, parse it, and place the elements into seperate variables.<br><br>";


fwrite($filename,$book);

$read_data = fopen($db, 'a+');
$parsed_data = explode(",", $read_data);

   foreach($parsed_data as $value) {
	echo "$parsed_data";
									}

fclose($filename);
?>

[kburger]

change this:

foreach($parsed_data as $value) {
    echo "$parsed_data";
                                    } 

to this:

foreach($parsed_data as $value) {
    echo "$value";
                                    } 

[MikeSnead]

This piece of code here:

$read_data = fopen($db, 'a+');
$parsed_data = explode(",", $read_data);

You're trying to explode the file resource returned by fopen... instead of whatever string you're trying to parse.

[paulnaj]

Hi ninjapheret,

After using fopen(), you then use fread() and feof() to get the data,

But, if you know each file isn't going to be particularly large, then use the file() function ...

$lines = file($path_to_file); // $lines is an array of lines
foreach($lines as $line){
	$parsed_data = explode(",", $line); 
	// ...
}

Paul 🙂

[MikeSnead]

I think this might be what you want to see...

<?php

$title = "bob's book";
$author = "bobby smith";
$db = "database.txt";
$filename = fopen($db, 'w+');
$book = "$title,$author";

echo "Seperate Variables (\$title and \$author):<br>";
echo "<b>$title<br> $author</b><br><br>";

echo "The string \$book which contains both vars,<br>";
echo "seperated by a comma (no spaces!):<br>";
echo "<b>$book</b><br><br>";

$everything = explode(",", $book);

echo "\$everything Array, Value 1:\n";
echo "<b>$everything[0]</b><br><br>";

echo "\$everything Array, Value 2:\n";
echo "<b>$everything[1]</b>";

echo "<hr><br>";

echo "Attempting to place the \$book data into a comma delimited text file,<br>reopen it, parse it, and place the elements into seperate variables.<br><br>";


fwrite($filename,$book);

$read_data = fopen($db, 'a+');
$data = fgets($read_data);
$parsed_data = explode(",", $data);

foreach($parsed_data as $value)
{
	echo "$value";
}

fclose($filename);
?>

It ouputs the following:

Seperate Variables ($title and $author):
bob's book
bobby smith

The string $book which contains both vars,
seperated by a comma (no spaces!):
bob's book,bobby smith

$everything Array, Value 1: bob's book

$everything Array, Value 2: bobby smith

Attempting to place the $book data into a comma delimited text file,
reopen it, parse it, and place the elements into seperate variables.

bob's bookbobby smith