QRegularExpression For Phone Number

Question

I am trying to use regular expressions to validate phone numbers but its just allowing all numbers to be accepted not just 10, my regular expression is ^[0-9]{10} which should just allow 10 numbers 0-9. my test strings were 1234567890 which passed and 703482062323 which also passed. What can i do to fix this issue?

The code im using to test the regular expression is

QRegularExpression Phone_Num("^[0-9]{10}"); // 10 numbers in a phone number
QRegularExpressionMatch match = Phone_Num.match("12345612312312312121237890");
qDebug() << match.hasMatch();

its still accepting more than 10 numbers – Root0x Mar 28 '15 at 16:37 — Root0x, Mar 28 '15 at 16:37

aep · Accepted Answer · 2015-03-28T16:50:07.203

1

assuming you really want exactly 10:

^[0-9]{10}$

match end-of-line so that it doesn't match a subset of a line with more than 10.

#include <QRegularExpression>
#include <QDebug>

int main() {
    QRegularExpression re("^[0-9]{10}$");
    qDebug() << re.match("12345678901123").hasMatch();
    qDebug() << re.match("1234567890").hasMatch();
    qDebug() << re.match("12345678").hasMatch();
    qDebug() << re.match("123123123a").hasMatch();
}

output:

false
true
false
false

edited Mar 28 '15 at 16:50

answered Mar 28 '15 at 16:43

aep

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26

you don't need to use capturing groups just `^[0-9]{10}$` would be enough. – Avinash Raj Mar 28 '15 at 16:48
correct. edited. dunno why i put them there, probably just reflex. @AvinashRaj – aep Mar 28 '15 at 16:50

score 0 · Answer 2 · answered Mar 28 '15 at 16:42

0

See this, please. Your regex is OK as every string containing at least 10 digits will pass. You can use grouping like that: ([0-9]{10}) and then extract the group somehow (see this).

answered Mar 28 '15 at 16:42

ForceBru

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10
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QRegularExpression For Phone Number

2 Answers2