PHP - Echo an array value from a class - php

Question

I have the following PHP code
<?php
class SimpleEmailServiceMessage
{
public function properNames($formValue) {
$formValue = strtolower($formValue); //Make all letters small case
$formValue = ucwords($formValue); //Make all first letters capital
$formValue = str_replace('','',$formValue); //Remove extra spaces
if(is_numeric($username)) {
$error[] = 'The name is invalid';
}
return $error;
return $formValue;
}
}
$username = 'john doe';
$m = new SimpleEmailServiceMessage();
echo $m->properNames($username);
foreach($error as $result) {
echo $result . '<br>';
}
?>
I am managing to output $username, but I am not managing to output $error[] if it is a number. $error[] in my case is an array as different classes will have an error.
The current code is telling me Array Warning: Invalid argument supplied for foreach() in /web/com/140895582016925/main.php on line 22 which is for foreach($error as $result) {

Answer 1

The error message say it all: your $error is NOT an array.
Take a look at the is_numeric() validation part of your code.
You have an error there.
is_numeric() needs an argument.
In your case i think you need to:
if ( is_numeric($formValue ) )
{
// execute if condition
}

Answer 2

try this
<?php
class SimpleEmailServiceMessage
{
public $error;
public function properNames($formValue) {
$formValue = strtolower($formValue); //Make all letters small case
$formValue = ucwords($formValue); //Make all first letters capital
$formValue = str_replace('','',$formValue); //Remove extra spaces
if(is_numeric($formValue)) {
$this->error[] = 'The name is invalid';
}
return $formValue;
}
}
$username = 'john doe';
$m = new SimpleEmailServiceMessage();
echo $m->properNames($username);
if(isset($m->error))
{
foreach($m->error as $result) {
echo $result . '<br>';
}
}
?>
Demo

Answer 3

Try to use assignment:
$error = $m->properNames($username);
instead of echoing:
echo $m->properNames($username);