PHP - Rounding To 2 Decimal Places

I need to round a number based on it's decimal. 3 or below should round down, 4 should round up to 5, 6 and 7 should round down to 5; 8 and 9 should round up to the next whole number.

The below is returning 3 from 2.16.
Code: [Select]
<?php
$a=2.16;
$i=round($a, 1);
$b=$i;

$i=explode(".", $a);
$decimal=$i[1];

if($decimal < 5){
$j=floor($b);
$i= $decimal > 3 ? $j + .5 : $j;
echo $i;
}
else{
$j=ceil($b);
$i= $decimal < 8 ? $j - .5 : $j;
echo $i;
}
?>

EDIT: The explode should have been on $i not $a.

Hi

I am using Zen-Cart to which I have made significant changes.  Two years ago I managed to change the Products Sort Order from Integer to Decimal(5,2) to store books such as 1, 1.5, 1.75, 2 etc.  Regrettably we had a major server issue and I also lost the new coding.  Having restored everything else whenever we enter a book series number such as 1.5 it only stores as 1.

To date the zen-Cart forums have been unable to offer a solution so I am reaching out to see if anyone else can advise me of how to get this working again please.

 

Thanks in advance

Owen

 

Hello. This is my first post here. I am not an expert developer but I generally manage to do what is asked of me. However, now and then I'm stumped, like now...

I have an online database system for our company in which staff can enter JOB related data, this includes 2 dimensions which they enter in millimetres (mm).

Here's an example

$dimension1 might be entered as 850
$dimension2 might be entered as 1447
$square_metres is the value I need to calculate.

Firstly, I need to round both dimensions up to the next 100mm so the 850 in this example would become 900 and the 1447 would become 1500.

Once I've done that, I need to calculate the square metres (900mm x 1500mm / 1000 was my first thought) but that raised the second thing; adding a decimal point in the result. 900 x 1500 / 1000 = 1350 but I need the result to be 1.350

I know my way around basic PHP code but I'm no expert by any stretch.

If anyone can help me understand how to get this calculation done I would be hugely appreciative.

Thank you

Martin

This topic has been moved to PHP Regex.

http://www.phpfreaks.com/forums/index.php?topic=311051.0

For every search, I get ZERO RESULTS, and I don't understand what I'm doing wrong.

Code: [Select]
<?php
require('places_class.php');

$types = $_POST['type'];
$location = $_POST['place'];
$radius = $_POST['radius'];

$gplaces = New GooglePlaces;
$gplaces->SetLocation("$location");
$gplaces->SetRadius($radius);
$gplaces->SetTypes("$types");
$results = $gplaces->Search();

print_r($results);
?>

That's when the form is submitted, I checked the variables, and they are echoing out correctly.

Then I thought I'd hard-code the values in, same results
Code: [Select]
<?php
require('places_class.php');

$gplaces = New GooglePlaces;
$gplaces->SetLocation("40.5267,81.4778");
$gplaces->SetRadius(50);
$gplaces->SetTypes("food");
$results = $gplaces->Search();

print_r($results);
?>

Here is the class
Code: [Select]
<?php
class GooglePlaces
{
private $APIKey = "";
 
public $OutputType = "json";  //either json, xml or array
 
public $Errors = array();
 
private $APIUrl = "https://maps.googleapis.com/maps/api/place";
private $APICallType = "";
 
private $IncludeDetails = false; 
 
//all calls
private $Language = 'en';  //optional - https://spreadsheets.google.com/pub?key=p9pdwsai2hDMsLkXsoM05KQ&gid=1
 
//Search
private $Location;   //REQUIRED  - This must be provided as a google.maps.LatLng object.
private $Radius;   //REQUIRED  
private $Types;   //optional - separate tyep with pipe symbol  http://code.google.com/apis/maps/documentation/places/supported_types.html  
 
private $Name;   //optional
 
//Search, Details, 
private $Sensor = 'false'; //REQUIRED - is $Location coming from a sensor? like GPS?
 
//Details & Delete
private $Reference;
 
//Add
private $Accuracy;
 
public function Search()
    {
$this->APICallType = "search";
 
return $this->APICall();
}
 
public function Details()
    {
$this->APICallType = "details";
 
return $this->APICall();
}
 
public function Checkin()
    {
$this->APICallType = "checkin-in";
 
return $this->APICall();
}
 
public function Add()
    {
$this->APICallType = "add";
 
return $this->APICall();
}
 
public function Delete()
    {
$this->APICallType = "delete";
 
return $this->APICall();
}
 
 
public function SetLocation($Location)
{
$this->Location = $Location;
}
public function SetRadius($Radius)
{
$this->Radius = $Radius;
}
public function SetTypes($Types)
{
$this->Types = $Types;
}
public function SetLanguage($Language)
{
$this->Language = $Language;
}
public function SetName($Name)
{
$this->Name = $Name;
}
public function SetSensor($Sensor)
{
$this->Sensor = $Sensor;
}
public function SetReference($Reference)
{
$this->Reference = $Reference;
}
public function SetAccuracy($Accuracy)
{
$this->Accuracy = $Accuracy;
}
public function SetIncludeDetails($IncludeDetails)
{
$this->IncludeDetails = $IncludeDetails;
}
 
private function CheckForErrors()
{
if(empty($this->APICallType))
{
$this->Errors[] = "API Call Type is required but is missing.";
}
if(empty($this->APIKey))
{
$this->Errors[] = "API Key is is required but is missing.";
}
 
if(($this->OutputType!="json") && ($this->OutputType!="xml") && ($this->OutputType!="json"))
{
$this->Errors[] = "OutputType is required but is missing.";
}
 
 
 
}
 
 
 
private function APICall()
{
$this->CheckForErrors();
 
if($this->APICallType=="add" || $this->APICallType=="delete")
{
$URLToPostTo = $this->APIUrl."/".$this->APICallType."/".$this->OutputType."?key=".$this->APIKey."&sensor=".$this->Sensor;
 
if($this->APICallType=="add")
{
$LocationArray = explode(",", $this->Location);
$lat = trim($LocationArray[0]);
$lng = trim($LocationArray[1]);
 
$paramstopost[location][lat] = $lat;
$paramstopost[location][lng] = $lng;
$paramstopost[accuracy] = $this->Accuracy;
$paramstopost[name] = $this->Name;
$paramstopost[types] = explode("|", $this->Types);
$paramstopost[language] = $this->Language;
}
if($this->APICallType=="delete")
{
$paramstopost[reference] = $this->Reference;
}
 
$result = json_decode($this->CurlCall($URLToPostTo,json_encode($paramstopost)));
$result->errors = $this->Errors;
return $result;
 
}
 
if($this->APICallType=="search")
{
$URLparams = "location=".$this->Location."&radius=".$this->Radius."&types=".$this->Types."&language=".$this->Language."&name=".$this->Name."&sensor=".$this->Sensor;
}
if($this->APICallType=="details")
{
$URLparams = "reference=".$this->Reference."&language=".$this->Language."&sensor=".$this->Sensor;
}
if($this->APICallType=="check-in")
{
$URLparams = "reference=".$this->Reference."&language=".$this->Language."&sensor=".$this->Sensor;
}
 
 
$URLToCall = $this->APIUrl."/".$this->APICallType."/".$this->OutputType."?key=".$this->APIKey."&".$URLparams;
 
$result = json_decode(file_get_contents($URLToCall),true);
 
$result[errors] = $this->Errors;
 
if($result[status]=="OK" && $this->APICallType=="details")
{
foreach($result[result][address_components] as $key=>$component)
{
if($component[types][0]=="street_number")
{
$address_street_number = $component[short_name];
}
if($component[types][0]=="route")
{
$address_street_name = $component[short_name];
}
if($component[types][0]=="locality")
{
$address_city = $component[short_name];
}
if($component[types][0]=="administrative_area_level_1")
{
$address_state = $component[short_name];
}
if($component[types][0]=="postal_code")
{
$address_postal_code = $component[short_name];
}
}
 
$result[result][address_fixed][street_number] = $address_street_number;
$result[result][address_fixed][address_street_name] = $address_street_name;
$result[result][address_fixed][address_city] = $address_city;
$result[result][address_fixed][address_state] = $address_state;
$result[result][address_fixed][address_postal_code] = $address_postal_code;
}
return $result;
 
}
 
private function CurlCall($url,$topost)
{
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, $url); 
curl_setopt($ch, CURLOPT_HEADER, FALSE);  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); 
curl_setopt($ch, CURLOPT_POSTFIELDS, $topost);
$body = curl_exec($ch); 
curl_close($ch); 
 
return $body;
 
}
 
}
?>

And yes, I do have the correct API Key, I just took it out

Can anybody see what the issue is?

I want to round off an integer vaule to 10-6 grd from

52.71666666  to  52716666

0.926888888  to  926888

does anyone know a simple way to do this?

How can I round this with 2 decimals:

Code: [Select]
echo " $row[team_treasure] ";
I've tried round($row[team_treasure],2) but doesn't seem to work inside my echo tags :/

So I just started working with php (not programming) a couple days ago. In this formula, I need to round something down to the nearest 5 OR 0. Whatever comes first. Any thoughts on how i might do this?

Here's what I have so far.
<?php
$magicLevel = $_POST['magicLevel'];
$playerLevel = $_POST['playerLevel'];
$rune = $_POST['rune']; //gets the value "lmm"
$maxDamage = 0;

switch($rune) {
case "lmm":
$maxDamage = ($playerLevel*0.2)+($magicLevel*0.81)+4;
break;
}


echo $maxDamage;

?>

What I need to round down is this part: ($playerLevel*0.2)

Thanks in advance!

Hi all,

Can anyone please help me with my problem.

I want to know how to round a decimal - eg. 12.34 to the nearest .10 so it would be 12.30 or if 12.35 go to 12.30 or 12.40.

// my example:

round(12.34, 2);

// I want to to go to: 12.30

Any help is greatly appreciated.

I am trying to take a number (three for example) and want to round it to five, or sixty-seven up to seventy.  I looked at round and ceil, but those don't seem like they are the right things.

Thanks,
Joseph

hi there all,

I need some help for rounding currency issue..

example:

0.98 round to 0.95
0.95 when round = 0.95
0.91 roun to 0.95.

mean.
i wanna round the end of number 0.98.
if the end of number is 0.01,0.02,0.03&0.04 it would be automatic round to nearest 0.05
*0.01 round = 0.05
*if the mineral water =$0.71 i should get $0.75

and if the end of number is 0.06,0.07,0.08,0.09 it would automatic round to nearest -0.05
*0.06 round = 0.05
*if the mineral water = $0.79 then i should get $0.75

i had googling this for 2months and no answer.. 
please help me.TQ

how do i make a leaderboard that is capable of handling equal scores from a particular result?

we use following points allocations:
winner: 5pts
second: 3pts
third: 2pts
fourth: 1pt

however, if 2nd and 3rd have tied scores, i would like to combine their point allocations together and divide by 2, i.e. (3+2)/2=2.5points each.

initial query for competition ranking:

$q_lastcomp = "SELECT p.p_id, p.p_surname, p.p_forename, p.p_handicap, r.r_id, rp.rp_score, rp.rp_handicap, (rp.rp_score-rp.rp_handicap) as net_score ";
$q_lastcomp .= "FROM dan_roundplayed rp, dan_round r, dan_player p ";
$q_lastcomp .= "WHERE r.r_id = rp.rp_rid ";
$q_lastcomp .= "AND p.p_id = rp.rp_pid ";
$q_lastcomp .= "AND r.r_id = 6 ";
$q_lastcomp .= "ORDER BY net_score";
$r_lastcomp = mysql_query($q_lastcomp) or die(mysql_error());


i then loop through this resultset in this order (top down), and do some more calculations to adjust the players golf handicaps based on these results too. basically, if there are 4 players, the winner has beaten 3 others, second has beaten 2 others, down to last place who has beaten no-one.
the number of players you have beaten is multiplied by 10% of their handicap (not precisely this value, but something like it and makes easier to explain), then this adjustment is subtracted from the handicap to make a new handicap for the next comp.

this works fine, so long as no-one is tied. but if 2nd and 3rd tie, then both players have effectively only beaten 1 other player (last placed). so i would want both to do "hcap - (1*(hcap*0.1))" for their handicap adjustment calculations.
in my current code, even though they were tied, 2nd would have: "hcap - (2*(hcap*0.1))"
3rd would have: "hcap - (1*(hcap*0.1))"

my current loop code is:

    $total_players = mysql_num_rows($r_lastcomp);
    
    $i = 1;
    while($row = mysql_fetch_array($r_lastcomp)){
        echo "<br>";
        $round_hcap = round($row[p_handicap]);
        SWITCH ($round_hcap){
            CASE $round_hcap >= 0 AND $round_hcap <= 19:
                $multiplier = 0.1;
                break;
            CASE $round_hcap >= 20 AND $round_hcap <= 29:
                $multiplier = 0.2;
                break;
            CASE $round_hcap >= 30 AND $round_hcap <= 39:
                $multiplier = 0.3;
                break;
            CASE $round_hcap >= 40 AND $round_hcap <= 49:
                $multiplier = 0.4;
                break;
        }
        $hcap_reduce = ($total_players-$i)*$multiplier;
        $new_hcap = $row[p_handicap]-(($total_players-$i)*$multiplier);
        $sqlstr = "INSERT INTO dan_handicap VALUES (". $row[p_id]. ",". $row[r_id]. ",". $row[p_handicap]. ",". $i. ",";
        $sqlstr .= $total_players. ",". $hcap_reduce. ",". $new_hcap. ");";
        $sqlstr2 = "UPDATE dan_player SET p_handicap = ". $new_hcap. " WHERE p_id = ". $row[p_id]. ";";
        echo $sqlstr. "<br>";
        echo $sqlstr2. "<br>";
        $i++;
    }


can anyone help with this please?

my initial thoughts are i am going to need a drastic adjustment to the initial query add in position number in the comp, i.e. this would produce
posn | name | score
1 | winner | 10
2 | tied 2nd | 8
2 | tied 2nd | 8
4 | last place | 5

the second section of code could then use this "position number" for the multiplier part of the calculations.

apologies for the length of the post, but this covers the whole requirements.

regards

jingo_man

Hi fellas,

Can anyone show me why my script is still rounding up / down?

printf ("<tr> %s Avg gun Ahit %%</td> %s %.2f %%</td></tr>\n",$tdo,$tdor,number_format($ahit/$fired*100, 3, '.', ''));

Do I have a syntax error as I cannot get my math equation to display more than 2 decimal places even though it's set to 3?

Any help or advice would be really great.

Hey Everybody,

I was replying to someone elses question about number formatting and came up with a class that will format a number of any length with decimal or not, without rounding. It works perfectly, but after a comment by a noteworthy member my curiosity was aroused.

Is there an easier/faster/better way to achieve this??


My Object:

<?php

/*GHETTO NUMBER FORMATTER v1.0*/

class ghettoNumber {

private $input;
private $output;

public $whole;
public $decimal;
public $number;

function __construct($input){
$this->input = $input;
$this->output = $output;
$this->number = $number;
$this->whole = $whole;
$this->decimal = $decimal;
}

private function ghettoFormat(){

//Split number at the .(decimal)
$this->number = explode('.', $this->input);
//Define the whole number
$this->whole = $this->number[0];
//Format the whole number
$this->whole = number_format($this->whole, 0,'', ',');
//Define the decimal
$this->decimal = $this->number[1];
//Format the decimal
$this->decimal = rtrim($this->decimal, '0');

if(is_string($this->input)){
$this->output = $this->decimal != '' ? $this->whole.'.'.$this->decimal : $this->whole;
}
else{
$this->output = '<strong>ERROR:</strong> Input arg must be passed as type: <em>string</em>';
}

//Return result
return 'Original - '.$this->input.'<br>
  GhettoFormat - '.$this->output.'
<br><br>';

}

public function makeItGhetto(){
return $this->ghettoFormat();
}
}

?>


Sample Instantiation:

$ghettoFormat = new ghettoNumber('12565456565.123401201001210000');
                print $ghettoFormat->makeItGhetto();



I will reiterate my question once more...
Is there, in your opinion, a BETTER way to achieve this (number formatting w/o rounding)?

Thanks People,

E

Here is the number:



$GrandTotal = "68.835";
$Deposit = round($GrandTotal , 2) * .5;

echo $Deposit;



I am looking for: 68.84 but the function doesn't seem to work right.

Any help?