Display variable with auto-increment - php

Question

I have a form that records various fields with a variable name in autoincrement.
when I save my my form variables looks like
<form>
<?php
$i = 1;
foreach ($variables as $var ) {
echo '<input type="text" name="txt$i" value="$var->name" />';
$i ++;
}
?>
</form>
And my question is how to display the value of the input field, i make that, but not working
<?php
foreach ($variables as $var) {
echo $var->txt$i;
$i ++;
}
?>

Answer 1

There are couple of bugs in both of your scripts. Here they are fixed.
<form>
<?php
$i = 1;
foreach ($variables as $var ) {
echo '<input type="text" name="txt' . $i . '" value="' . $var->name . '" />';
$i++;
}
?>
</form>
<?php
$i = 1;
foreach ($variables as $var) {
echo $var->{"txt" . $i};
$i++;
}
?>

Answer 2

In PHP, single-quoted strings do not allow for variable interpolation.
Try:
echo '<input type="text" name="txt' . $i . '" value="' . $var->name . '" />';

Answer 3

This is happening because you are using single quotes:
echo '<input type="text" name="txt$i" value="$var->name" />';
and inside single quotes variable interpolation does not happen.
Instead use:
echo '<input type="text" name="txt'.$i.'" value="'.$var->name.'" />';

Answer 4

This should work,
<form>
<?php
$variables = array("red","yellow","blue","orange","green");
$i = 1;
foreach ($variables as $var ) {
$name = "txt".$i;
echo "<input type='text' name='".$name."' value='".$var."' />";
$i++;
} ?>
</form>
You need to put variables in double quotes, i thought it would be easier to create a name variable and concatenate the incremented value on to the end of it

Answer 5

Can't get what you want from your question.
May be just
echo $txt.$i;
?