Why does this PHP code just echo “Array”?

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You are calling echo on an actual array, which does not have an implicit string representation.

In order to output an array’s contents you can use the print_r, var_dump or var_export functions or for custom output, you can use array_map or even a foreach loop:

print_r($errormessage);
var_dump($errormessage);
var_export($errormessage);

foreach($errormessage as $error) 
   echo $error . '<br/>';

array_map('echo', $errormessage);

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