Iterate through an array

[epp_b]

How do you iterate through an array to eventually use it in an "if" structure that validates user input to equal one array value exclusively?

<?
$array[] = "valueone";
$array[] = "valuetwo";

// count the array and subtract one because array indexing starts at zero
$countem = count($array) - 1;

for ($i=0;$i<countem;$i++) {
$allarrays = ereg($array[$i], $post_user_input);
}

if ( !$allarrays) {
echo "Error. Your input does not match.";
}
else {
echo "You input matches.";
}
?>

With this script, only the first one is allowed:

if the user input is "valueone", it will match. However, "valuetwo" will not match. What is wrong with this script😕

[floR]

Every time you do the ereg check, you are overriding the previous value of $allarrays. This is probably not what you want. Maybe something like this would work better:

$allarrays = false;
for ($i=0;$i<countem;$i++) {
$allarrays |= ereg($array[$i], $post_user_input);
}

This will return true if user input matches an element of the array.

By the way, it's 5am here so maybe I should really dive into my bed, but I would have expected that 'valueone' would not match in your code, instead of valuetwo...

[the_Igel]

by the way, you'd better have a look at in_array(). It may turn out useful 🙂

[Weedpacket]

If you don't want to use in_array() (and even if you do), I'd recommend you also have a look at the break statement.

[the_Igel]

Yeah! Yeah! And also do not forget to learn about do {} while and foreach().