PHP - Transform String to Float

Question

I need to transform a String to a Float.

I will receive Strings like this:

$string  = "1.70 m";
$string2 = "2.445 m";

How can I easly transform this strings to:

$float1 = 1.70;
$float2 = 2.445;

Can someone give me some clues?

Best Regards,

Please edit your question to clarify whether you mean floats or integers. Otherwise I'll do it and assume you mean floats. — BoltClock
– BoltClock, Commented Feb 19, 2011 at 17:15

BoltClock · Accepted Answer · 2011-02-19 17:07:15Z

9

Those are floats, not integers. Integers do not have decimal points.

To answer your question, you can simply typecast the strings directly, the conversion will strip off the units as those aren't numeric characters:

$string = "1.70 m";
$float = (float) $string;

edited Feb 19, 2011 at 17:07

answered Feb 19, 2011 at 17:00

BoltClock

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3 Comments

André Over a year ago

Great trick! And great help. Thanks for your knowledge. Best Regards.

André Over a year ago

Hi, I have been doing come UnitTest's. If I input "m 1.70" will not return "1.70". Any clues how how to solve? Best Regards,

BoltClock Over a year ago

@André: You may want to ask a new question.

Gaurav · Accepted Answer · 2011-02-19 17:17:52Z

3

you can get it by

echo (float)array_shift(implode(' ', $string));

Update :

echo (float) $string;

edited Feb 19, 2011 at 17:17

answered Feb 19, 2011 at 17:00

Gaurav

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2 Comments

BoltClock Over a year ago

No need for the trouble, a direct cast will strip the space and the units away.

Gaurav Over a year ago

Yaa..! I got that after your answer.

Gavin Anderegg · Accepted Answer · 2011-02-19 17:05:37Z

2

The easiest way to do this is probably with the floatval() function:

http://ca.php.net/manual/en/function.floatval.php

For exmaple:

floatval("1.70 m");

gives you:

1.7

answered Feb 19, 2011 at 17:05

Gavin Anderegg

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Comments

ThorDozer · Accepted Answer · 2011-02-19 17:02:31Z

-1

$integer = intval($string);

Enjoy :D

answered Feb 19, 2011 at 17:02

ThorDozer

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