The problem is that you are not using functions correctly, not only are you not parsing items incorrectly you are calling them incorrectly. read the documentation more carefully.
I think you would be want something like this
function generatecode($length,$pdo){
$characters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
$abc = $randomString;
return checkcode($abc,$pdo);
}
function checkcode($abc,$pdo){
$sql2 = "SELECT code FROM users WHERE code = :code";
if($stmt = $pdo->prepare($sql2)){
$stmt->bindParam(":code", $param_code, PDO::PARAM_STR);
$param_code = $abc;
if($stmt->execute()){
if($stmt->rowCount() == 1){
generatecode();
} else{
$code = $abc;
return $code;
}
} else{
$code_err = "something doest want to work here, come back later";
echo "Oops! Something went wrong. Please try again later.";
}
// Close statement
unset($stmt);
}
}
$code = generatecode($length,$pdo);// this correctly calls the function
you're welcome
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