Código:
<form name="form1" method="post" action="index.php">
<label for="input"></label>
<input type="text" name="input" id="input">
</form>
<?php
if(isset($_POST['input'])) {
$algo=array();
$algo[]=$_POST['input'];
foreach ($algo as $v) {
echo $v ; }
}
?>


