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I need second last number from the list and the list can have varied length. I tried seperating it using explode(",", $layouts);
$layouts= '1,0,2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,0,10,0,11,0,12,0,13,0,14,0,15,0,16,0,17,0,18,0,19,0,20,0,21,0,22,0,23,0,24,0,25,0,26,0,27,0,28,0,29,0,30,0';
Example : I need to get 30 from the string here.
please help
If this list can grow in size as you have indicated in the comment, then usually explode it into an array, then do a count of the size, subtract two from the total size and use that as an index to get the value:
//turn this to array
$layouts = '1,0,2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,0,10,0,11,0,12,0,13,0,14,0,15,0,16,0,17,0,18,0,19,0,20,0,21,0,22,0,23,0,24,0,25,0,26,0,27,0,28,0,29,0,30,0';
$layoutsArray = explode(",", $layouts);
$xtarget = count($layoutsArray) - 2;
$xvalue = "";
if($xtarget > -1){
$xvalue = $layoutsArray[$xtarget];
}else {
//it could be wrong
}
You can explode it with , and get 2nd last value from array try the following code
$layouts= '1,0,2,0,3,0,4,0,5,0,6,0,7,0,8,0,9,0,10,0,11,0,12,0,13,0,14,0,15,0,16,0,17,0,18,0,19,0,20,0,21,0,22,0,23,0,24,0,25,0,26,0,27,0,28,0,29,0,30,0';
$array = explode(',',$layouts);
if(count($array) > 2){
$pair = array_slice($array, -2, 1, true);
$key = key($pair);
$value = current($pair);
echo $value;
}
Output
30
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so I want to add two values (money values) but can't quite work it out.
I keep getting a notice, I've tried number_format to format it but even using that I get the 'Notice: A non well formed numeric value encountered'
$price = 0.00;
while($row = $result->fetch_assoc()) {
$dbprice = $row["ProductSellPrice"];
$price = $price + $dbprice;
//echo number_format($price + $dbprice,2);
}
however I get this problem: Notice: A non well formed numeric value encountered
If I add two values '5' + '1.5' I get '6' as a result.
Edit:
The values I were pulling from the database were formatted with commas.
PHP numbers uses dot as separator and seems that you have coma. Please replace the coma with the dot as first. After that you can cast the prices into floats and finally sum it up :)
You can try with this (based on you example):
<?php
$price = 0.00;
while($row = $result->fetch_assoc()) {
$dbprice = $row["ProductSellPrice"];
// Replace comma. Check also for possible thousand separator.
$dbprice = str_replace(',', '.', $dbprice);
$price = $price + (float)$dbprice;
//echo number_format($price + $dbprice, 2);
}
?>
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I am just trying to figure out how I can get the actual digits of a figure that has been calculated within php and formatted to have 2 decimal places.
so say its calculated it to be 45.76 I am trying to figure out how I can get the 76 from it for an if statement. Basically I want it to look and just say that if it's 00 then remove them, if not, show them.
Thanks
Try :
function showDecimals($v){
$n = abs($v);
$whole = floor($n);
$fraction = $n - $whole;
return $fraction > 0
}
And...
if (showDecimals(10.15)){
//Show
}else{
//Remove?
}
You want to show a whole number if there is no decimal place, and 2 decimals of precision if not?
Method 1
function formatNumber($n) {
$n = round($n*100)/100;
return ''+$n;
}
This simply rounds it to 2 decimals of precision. Zero truncation is automatic.
Usage
echo formatNumber(0); //0
echo formatNumber(0.5); //0.5
echo formatNumber(0.894); //0.89
echo formatNumber(0.896); //0.9
echo formatNumber(1.896); //1.9
Method 2
Or if you 1.9 to display as 1.90, I suppose this would work:
function formatNumber($n) {
if ($n == 0)
return ''+$n;
$str = ''.round($n*100)/100;
$dotpos = strrpos('.', $str);
if (strlen(substr($str, $dotpos+1)) === 2)
$str .= '0';
return $str;
}
Usage:
echo formatNumber(0); //0
echo formatNumber(0.5); //0.50
echo formatNumber(0.894); //0.89
echo formatNumber(0.896); //0.90
echo formatNumber(1.896); //1.90
Edit: Accidentally posted broken version of method 2, should be fixed now.
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I have a bit of code but it is not echoing the correct answer, or in the correct format. I tried the round function but that didnt show anything
here is my code
$total_per_year = 308790;
$fat = $total_per_year / 3500;
echo $fat;
it is currently showing it as 0.088, but the correct answer is 88.2257142857
how can i do this so it round up to 88.2
The round function requires two parameters like so:
echo round($fat,1);
The second parameter being the amount of decimal places you require.
I have had issues previously with round not working as expected and I had to use number_format:
echo number_format((float)$fat,1,'.','');
With 1 being the decimal places required, the full stop being the decimal separator and '', being the thousand separator.
Use round()
echo round($fat, 1); //second argument is precision eg. decimals
See this for documentation: http://dk1.php.net/round
right, i worked this out now. I know i kept getting '0.088'. And this is wrong.
Its because i had it like this
$total_per_day = number_format($total_per_cup * $number_of_cups);
$total_per_year = number_format($total_per_day * 365);
$fat = round($total_per_year / 3500, 1);
echo $fat;
echo $total_per_year;
this is the correct code.
$total_per_cup = $type_calorie + $milk_calorie + $sugar_calorie;
$total_per_day = $total_per_cup * $number_of_cups;
$total_per_year = $total_per_day * 365;
$fat = $total_per_year / 3500;
echo json_encode(array('total'=> number_format($total_per_year) , 'perday' => number_format($total_per_day), 'fat'=> round($fat, 1)));
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I'm writing code to show the prices of some products. If the price is 0 it doesn't show anything.
<? if ($book->price_euro != 0) {$europrice = number_format($book->price_eur, 2); echo "€$europrice";}?>
<? if ($book->price_gbp != 0) {$gbpprice = number_format($book->price_gbp, 2); echo "£$gbpprice";}?>
<? if ($book->price_usd != 0) {$usdprice = number_format($book->price_usd, 2); echo "$$usdprice";}?>
This echoes "€0.00 £33.00 $66.00 ". The € price is set to 99. I can see no reason whatsoever that this should echo as 0! Am I doing something wrong? Bad syntax?
$europrice = number_format($book->price_eur, 2
shouldn't it be $book->price_euro ?
Typo in Euro
number_format($book->price_eur, 2); // This is what you have.
number_format($book->price_euro, 2); // This is what you need.
I don't see anything wrong with this code without seeing more. But maybe your variable?
<? if ($book->price_euro != 0) {$europrice = number_format($book->price_eur, 2); echo "€$europrice";}?>
price_eur should be price_euro?
number_format($book->price_eur, 2);
should be
number_format($book->price_euro, 2);
The null value is causing your problem.
You might still be getting null values or something else try using empty instead
<? if (empty($book->price_euro)) {$europrice = number_format($book->price_euro, 2); echo "€$europrice";}?>
<? if (empty($book->price_gbp)) {$gbpprice = number_format($book->price_gbp, 2); echo "£$gbpprice";}?>
<? if (empty($book->price_usd)) {$usdprice = number_format($book->price_usd, 2); echo "$$usdprice";}?>