How to concatenate PHP variable name?

Question

I have a PHP for loop:

for ($counter=0,$counter<=67,$counter++){

echo $counter;
$check=\"some value\";

}

What I am trying to achieve i

Answer 1

The proper syntax for variable variables is:

${"check" . $counter} = "some value";

However, I highly discourage this. What you're trying to accomplish can most likely be solved more elegantly by using arrays. Example usage:

// Setting values
$check = array();
for ($counter = 0; $counter <= 67; $counter++){
    echo $counter;
    $check[] = "some value";
}

// Iterating through the values
foreach($check as $value) {
    echo $value;
}

Answer 2

You should use ${'varname'} syntax:

for ($counter=0,$counter<=67,$counter++){
    echo $counter;
    ${'check' . $counter} ="some value";
}

this will work, but why not just use an array?

$check[$counter] = "some value";

Answer 3

This is usable in some cases. For example if your app has something like 2 language entries in DB.

echo $this->{'article_title_'.$language};

That's much more usable than for example this;

if($language == 'mylanguage1')
    echo $this->article_title_mylanguage1;
else
    echo $this->article_title_mylanguage2;

Obviously this is what you should not have to do in your multilingual app, but i have seen cases like this.

Answer 4

An array would accomplish this.

$check = array();

for($counter = 0; $counter <= 67; $counter++) {
    $check[] = "some value";
    var_dump($check[$counter]);
}