how to check valid decimal point number with Regex?

Question

how can i check number is valid with below string.

last 2 digit may content decimal value or may not.

below are the code which i have already tried with preg_match but couldn't get any success

$newPrice = "2,264.00"; or //  $newPrice = "264.00"; 

 if (!preg_match('/^[+-][0-9]+(\,[0-9]+)?%?$/', $newPrice))
{                
    echo "not valid";
 }else{                    
       echo "valid";
}
exit();

above both price is correct as per allowed format.

you can refer this : http://stackoverflow.com/questions/1565994/regex-to-match-comma-separated-numbers-with-optional-decimal-part — Priyank Patel, Mar 14 '14 at 05:15
`/(?<=\s|^)(?:\d{1,3}(?:,\d{3})*(?:\.\d\d)?|\.\d\d)(?=\s|$)/` is more than sufficient :) . — Priyank Patel, Mar 14 '14 at 05:19

Joachim Isaksson · Accepted Answer · 2014-03-14T05:48:52.073

6

The regex has 3 parts;

[0-9]{1,3}     1-3 digits
(,[0-9]{3})*   An optional repeated part of a comma + 3 digits
(\.[0-9]{2})?  An optional part of a decimal dot and 2 digits

This can be written as;

/^[0-9]{1,3}(,[0-9]{3})*(\.[0-9]{2})?$/

edited Mar 14 '14 at 05:48

answered Mar 14 '14 at 05:37

Joachim Isaksson

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score 1 · Answer 2 · answered Mar 14 '14 at 05:55

1

try this

^[+-]?[\d\,]+\.?\d+?

this will match values like :

222,222,264.00
+2,424,24.34
-264
264.00

demo

answered Mar 14 '14 at 05:55

aelor

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48

this finds only ONE number – Sliq May 17 '18 at 00:24
1

@Sliq I think you can just remove the `^` from the beginning of the regex and it will work for more than one number also – aelor May 17 '18 at 06:08

score 0 · Answer 3 · answered Mar 14 '14 at 05:14

0

Use this regex:

[0-9,]+(?:\.[0-9]*)?

Regular expression visualization

Debuggex Demo

answered Mar 14 '14 at 05:14

Amit Joki

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what is values is like `222,222,264.00` ? – Priyank Patel Mar 14 '14 at 05:35

how to check valid decimal point number with Regex?

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