asked on function available outside function?
I am still trying to wrap my head around functions and scope.
I thought that you couldn't call a function from outside of a function yet I have taken an example from W3 Schools website
Unless I am so confused I am missing something, it looks like:
is being used outside of the actual test_input function and this works. I thought it wouldn't work because it's outside the function. Or am I misunderstanding?
I thought that you couldn't call a function from outside of a function yet I have taken an example from W3 Schools website
if (empty($_POST["gender"])) {
$genderErr = "Gender is required";
} else {
$gender = test_input($_POST["gender"]);
}
}
function test_input($data) {
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
}
Unless I am so confused I am missing something, it looks like:
$gender = test_input($_POST["gender"]);
is being used outside of the actual test_input function and this works. I thought it wouldn't work because it's outside the function. Or am I misunderstanding?
PHP
Last Comment
zephyr_hex (Megan)
ASKER
Yeah, I also thought it strange that they had the function at the bottom but that is how they did it.
Could I make it all into one function if I wanted to use it all as a form validation function?
Could I make it all into one function if I wanted to use it all as a form validation function?
function test_input($data) {
$message = "";
$data = trim($data);
$data = stripslashes($data);
$data = htmlspecialchars($data);
return $data;
if (empty($_POST["gender"])) {
$message .= "Gender is required";
} else {
$gender = test_input($_POST["gender"]);
}
if($message) {
echo "There were errors in your form:<br>" . $message;
} else {
//submit form
}
}
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That being said, some IDE's will throw a warning because the function should be written above the point where it's called. In other words, the function should appear before the conditional statement.