Getting only integer from string in php:can't get the float values correctly

Question

I am trying to get only integer from string for these i am using filter_var in php

Here is my code

$str="Your base price is 456";
echo filter_var($str,FILTER_SANITIZE_NUMBER_INT);

But if the string contains a floating point value filter_var returns integer without the floating point value.

Eg; 
$str="Your base price is 45.57";
echo filter_var(currencyConvert($currency,$results[0]->base_price),FILTER_SANITIZE_NUMBER_INT);

this will echo integer as 4557 but i need the value as same as the string.

ie it should be 45.57 but i will get it as 4557

Is any way to get this as correct float value?

What exactly is your objective? Do you want to print it as a floating point value? Or an integer? — Indrasis Datta
– Indrasis Datta, Commented Mar 31, 2016 at 6:49
Have you tried FILTER_SANITIZE_NUMBER_FLOAT? Generally, it is not advisable to use INT functions on non-integers, and this is one of many such cases. — Vegard
– Vegard, Commented Mar 31, 2016 at 6:52

Harry · Accepted Answer · 2016-03-31 06:55:18Z

2

Try using FILTER_SANITIZE_NUMBER_FLOAT but you must use the correct flag ie FILTER_FLAG_ALLOW_FRACTION

$str="Your base price is 45.57";
echo filter_var($str,FILTER_SANITIZE_NUMBER_INT);
print_r("\n");
echo filter_var($str,FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);
print_r("\n");

This prints

4557
45.57

answered Mar 31, 2016 at 6:55

Harry

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Comments

Indrasis Datta · Accepted Answer · 2016-03-31 06:56:14Z

1

Try this:

$str = "Your base price is 456";
echo preg_replace("/[^0-9\.]/", '', $str);  // Prints 456
echo "<br/>";
$str = "Your base price is 45.57";
echo preg_replace("/[^0-9\.]/", '', $str);  // Prints 45.57

Hope this helps.

answered Mar 31, 2016 at 6:56

Indrasis Datta

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Comments

Imran · Accepted Answer · 2016-03-31 06:52:27Z

0

In this line of code:

echo filter_var($str,FILTER_SANITIZE_NUMBER_INT); you have used FILTER_SANITIZE_NUMBER_INT to get integer number form a string. To get float number from a string you can use FILTER_VALIDATE_FLOAT. For more information check it out here: http://www.w3schools.com/php/filter_validate_float.asp

answered Mar 31, 2016 at 6:52

Imran

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Comments

RJParikh · Accepted Answer · 2016-03-31 06:55:20Z

0

Use below code it will help you.

$str="Your base price is 45.6";
preg_match_all('!\d+(?:\.\d+)?!', $str, $matches);
$floats = array_map('floatval', $matches[0]);
print_r($floats);

Or

echo filter_var($str,FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);

answered Mar 31, 2016 at 6:55

RJParikh

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1 Comment

RJParikh Over a year ago

Use any above code it will surly solved your problem. @Blessan Kurien

uday · Accepted Answer · 2016-03-31 07:05:36Z

0

Try This:

$str = "Your base price is 45.57";
$float_val=(float) filter_var( $str, FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION ) ;
echo $float_val;

answered Mar 31, 2016 at 7:05

uday

1

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