PHP - Question About Functions

Hi i have a function strored in a seperate file (included in my main php page for use), my question is a simple one but i cannot seem to find the answer on the web to this:

I call the function as follows passing the variable $name


<?php
myfunction($name)
?>

The function does somehting simple such as:

<?php
function myfunction ($name)
{
   if ($name = 'bob')
  {
     return true;
  }
else return false;
}
?>


How do i then obtain the true or false value of the function from back with my main php page?

Hi everyone,


Until now i didnt use classes and functions for sql related actions and now i would like to start.

I started out with this :

class.php
--------------------------------------------------- class db { 
    
    public function connect($database,$user,$password) { 
        $db = mysql_connect("localhost",$user,$password) or die (mysql_error());
        mysql_select_db($database);
    }
    
    
    static function fetch() {
    
         function getresults($query) { 

        $resultArray = array();
        $fetch = mysql_query($query) or die (mysql_error());
        
        while ($row = mysql_fetch_assoc($fetch)){
            $resultArray[] = $row;
          
            }
        
            return $resultArray;
    
        mysql_free_result($fetch);
                
        }
        

    }

        
}         and index.php
----------------------------

  <?php
require('class.php');

$connection = new db();
$connection->connect("testdb","root","root");

$connection->fetch()->getresults("SELECT * FROM users");

foreach (getresults() as $user) { 
    echo "<div>{$user['user_first_name']}</div>";
}

Hi there just wanted to ask you a general question regarding referenced variables and functions in PHP.

I have this code:
function theRefFunction(&$var){
$var = $var +1;
return $var;
}

$a = 50;

echo $thisvalue = theRefFunction($a);

Just for learning purposes, as allot of times beginning PHP seriously developers who want to improve on memory consumption in PHP find this tricky, is there any point in using an example like this?

I.e. would I really need the &$var as the parameter for the function called 'theRefFunction()'?

Just wondered thats all, if not what would be a better way for really using it?

It's just so I can go onto maybe doing a loop in it and setting it as a real example like working out tax and stuff like that, just for learning purposes, won't yet be using it.

Just wanted to build up as I said earlier a library of things I have done and make maybe my own tutorial site.

I look forward to any replies,
Jeremy.

I have asked this question in 3 different places but I get no answers lol. I hope to find some help here.   i want to only display user role for keymaster and moderator users. I don't want every participant to have their role shown , only the keymaster and moderators are important enough to me to show their role next to their avatar. The following function code i found, and used... It worked but has some issues:

function role_show () {
$displayed_user = bbp_get_reply_author_id() ;
$role = bbp_get_user_role( $displayed_user);
if ( bbp_is_user_keymaster($displayed_user) ||$role == 'bbp_moderator') $args['show_role'] = true ;
else $args['show_role'] = false ;
return $args ;
}
add_filter ('bbp_before_get_reply_author_link_parse_args', 'role_show' )

Code Issues: On the Forums topic post lists, This code also removes the avatar from showing in the same cell section as the “last post by” . And it removes the “last post by” name in this same section. How can I fix this ? If needed, I could implement this code again and provide a link to the error so you can see. Thank you for any help.       Side notes: Someone told me to try

function role_show ($args) {

As my first line , but it did not work. It resulted in the following screenshot :   as

Attached Files  functions-picture.png   35.46KB   0 downloads

I have a script I am putting together that simulate a cricket game. The only issue is, that there are a huge number of functions because there doesn't seem to be any other way to do this properly. As well as this, there a while() loop and all this seems to be leading to the page reaching a max 30 second timeout when generating the result.

My code is attached below, it is quite messy at the moment because i've just be working on it, but I was wondering if anyone has any solutions of how I can speed this up or change to prevent a timeout:

<?php
// Error reporting
error_reporting(E_ALL);

// Connect DB
mysql_connect("wickettowicket.adminfuel.com", "rockinaway", "preetha6488") or die(mysql_error());

// Select DB
mysql_select_db("wickettowicket") or die(mysql_error());

// MySQL queries to find batsmen and bowlers 
$array_batsmen = mysql_query('SELECT id, name, ability, strength FROM wtw_players WHERE team_id = 1 ORDER BY id ASC');
$array_bowlers = mysql_query('SELECT id, name, ability, strength FROM wtw_players WHERE team_id = 2');

// Start table for data 
$data = '<table width="600px">';

// Create blank scorecard
while ($array_bat = mysql_fetch_array($array_batsmen))
{
$data .= '<tr><td>'.$array_bat['name'].'</td><td></td><td></td><td>0</td></tr>';
}

// Set up arrays for players 
$current_batsman = $current_bowler = array();

// Reset query
mysql_data_seek($array_batsmen,0);

$in_one = $in_two = $it = '';

function currentBatsman($id, $name, $ability, $strength, $out, $in, $runs)
{
global $current_batsman;


$current_batsman = array (
'id' => $id,
'name' => $name,
'ability' => $ability,
'strength' => $strength,
'out' => $out,
'in' => $in,
'runs' => $runs
);

echo 'set current';
}

// Set up arrays of batsmen
while ($array = mysql_fetch_array($array_batsmen))
{

if ($it < 3 && $in_one == '') 
{
currentBatsman($array['id'], $array['name'], $array['ability'], $array['strength'], 0, 1, 0);

$batsmen[$array['id']] = array (
'id' => $array['id'],
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength'],
'out' => 0,
'in' => 1,
'runs' => 0
);

$in_one = $array['id'];
$current = $array['id'];
$it++;
}
else if ($it < 3 && $in_two == '') 
{
$batsmen[$array['id']] = array (
'id' => $array['id'],
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength'],
'out' => 0,
'in' => 1,
'runs' => 0
);

$in_two = $array['id'];
$it++;
}
else 
{
$batsmen[$array['id']] = array (
'id' => $array['id'],
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength'],
'out' => 0,
'in' => 0,
'runs' => 0
);
}

}

// Bowler Array
while ($array = mysql_fetch_array($array_bowlers))
{
$bowlers[] = array (
'name' => $array['name'],
'ability' => $array['ability'],
'strength' => $array['strength']
);

}

// Reset both queries
mysql_data_seek($array_bowlers,0);
mysql_data_seek($array_batsmen,0);



function changeBatsman($just_out)
{
global $array_batsmen, $batsmen; 

//Update array
$batsmen[$just_out] = array (
'in' => 1,
'out' =>  1
);

while ($array = mysql_fetch_array($array_batsmen))
{
if ($just_out != $array['id'] && $batsmen[$array['id']]['out'] != 0) currentBatsman($array['id'], $array['name'], $array['ability'], $array['strength'], 0, 1, 0);
}

// Reset query
mysql_data_seek($array_batsmen,0);

echo 'change batsman';
}

function swapBatsman($other_batsman)
{
global $array_batsmen, $batsman; 

while ($array = mysql_fetch_array($array_batsmen))
{
if ($other_batsman != $array['id'] && $batsman[$array['id']]['out'] != 0 && $batsman[$array['id']]['in'] == 1) currentBatsman($array['id'], $array['name'], $array['ability'], $array['strength'], 0, 1, 0);
}

// Reset query
mysql_data_seek($array_batsmen,0);

echo 'swap batsman';
}

$runs = $outs = $balls = $overs = 0;

$played = array();

function selectBowler()
{
global $bowlers, $current_bowler;

// Select random bowler
$choose_bowler = array_rand($bowlers, 1);

$current_bowler = array (
'name' => $bowlers[$choose_bowler]['name'],
'ability' => $bowlers[$choose_bowler]['ability'],
'strength' => $bowlers[$choose_bowler]['strength']
);

 

}

/*
function selectBatsman();
{
global $array_batsmen;

while ($array_batsmen[]['out'] != 1)
{


}*/

function bowl()
{
global $batsmen, $bowlers, $current_bowler, $current_batsman, $data, $balls, $outs, $runs;

if ($current_batsman['out'] == 0)
{
echo 'bowling';
// Set the initial number
$number = rand(0, 190);

// Ability of batsman
if ($current_batsman['ability'] > 90) $number += 30;
else if ($current_batsman['ability'] > 70) $number += 15;
else if ($current_batsman['ability'] > 50) $number += 2;
else $number = $number;

// Strength of batsman
if ($current_batsman['strength'] > 90) $number += 15;
else if ($current_batsman['strength'] > 70) $number += 10;
else if ($current_batsman['strength'] > 50) $number += 5;
else $number = $number;

// Depending on overs
if ($balls > 270) $number += 30;
else if ($balls > 120) $number -= 10;

// Ability
if ($current_bowler['ability'] > 90) $number -= 30;
else if ($current_bowler['ability'] > 70) $number -= 15;
else if ($current_bowler['ability'] > 50) $number -= 2;
else $number = $number;

// If batsman has made a huge total of runs, we need to knock some numbers off - more likely to get out
if ($current_batsman['runs'] > 200) $number -= 70;
else if ($current_batsman['runs'] > 100) $number -= 30;

// Finally sort out runs
if ($number > 190) $run = 6;
else if ($number > 170) $run = 4;
else if ($number > 160) $run = 3;
else if ($number > 100) $run = 2;
else if ($number > 50) $run = 1;
else if ($number > 10) $run = 0;
else if ($balls > 120 && $number > 0) $run = 0;
else $run = -1;

// Increase number of balls
$balls += 1;

// Are they out?
if ($run == -1)
{
$current_batsman['out'] = 1;

$played[] = $current_batsman['id'];
$find = '<tr><td>'.$current_batsman['name'].'</td><td></td><td></td><td>0</td></tr>';
$replace = '<tr><td>'.$current_batsman['name'].'</td><td></td><td>'.$current_bowler['name'].'</td><td>'.$current_batsman['runs'].'</td></tr>';

$data = str_replace($find, $replace, $data);


changeBatsman($current_batsman['id']); 



echo 'out';

}
else
{
$current_batsman['runs'] += $run;
$runs += $run;

if ($run == 1 || $run == 3)
{
swapBatsman($current_batsman['id']);
echo 'time to swap';
}

echo $run;


}

// Count outs
if ($current_batsman['out'] == 1)
$outs += 1;


}
}

function game()
{
global $main, $batsmen, $bowlers, $data, $batted, $balls, $outs, $current_batsman;

// Check if possible
while ($balls <= 295 && $outs < 10)
{

selectBowler();

// Actually bowl now

bowl();


}


}


game();



echo $data;