How to combine strings inside foreach into single string PHP - php

Question

I have code like this
$word = 'foo';
$char_buff = str_split($word);
foreach ($char_buff as $chars){
echo var_dump($chars);
}
The output was
string(1) "f"
string(1) "o"
string(1) "o"
For some reasons, I want to make the output become only 1 string like this:
string(3) "foo"
I tried with this
$char.=$chars;
echo var_dump($char);
But it shows error Undefined variable: char.

Answer 1

I'm going to assume that you have a good reason for splitting it up, only to put it back together again:
$word = 'foo';
$result = "";
$char_buff = str_split($word);
foreach ($char_buff as $char){
$result .= $char;
}
echo var_dump($result);
Which outputs the following:
string(3) "foo"

Answer 2

str_split() converts a string to an array. There's no need to use this function if you want to keep the whole word.

Answer 3

I would just use implode, much like this:
$string = implode('', $char_buff);

Answer 4

So, why do you split it just to make it a string again?
$word='foo'
$char_buff = str_split($word);
$final = array();
foreach ($char_buff as $chars){
$final[] = $chars;
}
var_dump( implode('', $final) );

Answer 5

Sounds like you are looking for implode()
http://php.net/manual/en/function.implode.php
As for the code you posted
$chars .= $char;
is probably what you were trying to do

Answer 6

Kind of strange to split a string, and then glue it together again, but here goes:
$word='foo'
$char_buff = str_split($word);
// this is what is missing, you have to define a variable first
$newword = "";
foreach ($char_buff as $chars){
$newword .= $chars;
}
echo var_dump($newword);

Answer 7

<?php
$word = 'foo';
$char_buff = str_split($word);
// here is the trick
$length = count($char_buff);
$char_buff[$length] = $word;
foreach ($char_buff as $chars)
{
echo var_dump($chars);
}
?>

Answer 8

Maybe some of you are looking for this answer.
I think var_dump() is no longer necessary for this problem.
<?php
if(isset($_POST['test'])){
$result = '';
for($x=1;$x<=4;$x++){
$ans = $_POST['ans'.$x];
$result .= $ans;
}
echo $result;
}
?>
Here is the HTML
<form role="form" method="post" action="<?php echo $url;?>">
<input type="checkbox" name="ans1" value="A">A
<input type="checkbox" name="ans2" value="B">B
<input type="checkbox" name="ans3" value="C">C
<input type="checkbox" name="ans4" value="D">D
<input type="submit" name="test" value="Submit Answer">
</form>