php how to pass a string/variable to a function?

Question

I have a file called function.php that has a function like this:

public function issue_challenge () 
{
    $conn= fns_connect(13);
    mysql_select_db("et_games",$conn);
    $sql = "insert into challengers (challenger,defender,stake,matching_game_id) values (".$this->talentnum_self.",".$this->talentnum_other.",".$this->stake.",'".$this->matching_str()."')";
    $result = mysql_query($sql);
    echo $sql; mysql_error();

    if($result){
        echo "ok.\n";return true;                
    }else{
        return false;                    
    }
}

and another file called test.php that has a form in it.

How do I pass the values from that form into that function?

I am looking for some generic answer on how to pass a string/variable to a function.

Thanks

functionName('I am a string'); to pass a string, functionName($iAmAVariable); to pass a variable — Zirak
– Zirak, Commented May 9, 2011 at 17:14

check123 · Accepted Answer · 2011-05-09 17:16:02Z

1

Call your function this way:

 if(isset($_GET['form_name'])) {
     $val = $_GET['form_name'];
     public function issue_challenge($val);
}

Also: Change the declaration to:

public function issue_challenge($formValue) {

...function contents...

}

answered May 9, 2011 at 17:16

check123

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Comments

Michael B · Accepted Answer · 2011-05-09 17:16:15Z

1

Generic answer that increments a value:

function inc($x) {

 echo "x = " . $x;
 $x++;
 return $x;

}

function main() {

$x = '1';
$y = $this->inc($x);
echo $y;

}

answered May 9, 2011 at 17:16

Michael B

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Comments

grantk · Accepted Answer · 2011-05-09 17:20:59Z

Make sure the form submission calls the function, then grab the value from the POST array. This is easier if using a php framework, many will offer you methods to clean the input. In this case since you are possibly using the input for a db query you will need to make sure it is properly escaped to avoid sql injection.

PHP manaul for mysql_real_escape_string

<form action="issue_challenge" method="POST">
<input type="text" name="testInput" id="testInput"/>
<input type="submit" name="submit" value="submit"/>
</form>

public function issue_challenge () {
    $conn= fns_connect(13);
    $inputText = $_POST['testInput']
mysql_select_db("et_games",$conn);
    $sql = "insert into challengers (challenger,defender,stake,matching_game_id) values (".$this->talentnum_self.",".$this->talentnum_other.",".$this->stake.",'".$this->matching_str()."')";
    $result = mysql_query($sql);
    echo $sql; mysql_error();
        if($result){
            echo "ok.\n";return true;                
            }else{
                return false;                    
            }
}

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