String 'starts with' function

[Paul Morrison]

Hi

I have looked at the PHP string functions and I cant see any function to
check to see whether a string starts with a certain letter or letters. Is
there any way of doing this with the built in functions?

Cheers,

Paul

[Erwin Moller]

Re: String 'starts with' function

Paul Morrison wrote:
[color=blue]
> Hi
>
> I have looked at the PHP string functions and I cant see any function to
> check to see whether a string starts with a certain letter or letters. Is
> there any way of doing this with the built in functions?
>
> Cheers,
>
> Paul[/color]

Hi Paul,

You can do this in many way, but the easiest way is just get the first
character of the string using substr(), and compare it to what you want.

It is here:

http://nl2.php.net/manual/en/function.substr.php

if (substr('abcd', 0,1) == 'a') ...

(Of course, if you like regexpr you can use them too. search for regexpr at
www.php.net for regexpr-functions)


Regards,
Erwin Moller

[Iván Sánchez Ortega]

Re: String 'starts with' function

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Paul Morrison wrote:
[color=blue]
> I have looked at the PHP string functions and I cant see any function to
> check to see whether a string starts with a certain letter or letters. Is
> there any way of doing this with the built in functions?[/color]

Have another look at the substr() function, and at the "==" operator.

- --
- ----------------------------------
Iván Sánchez Ortega -i-punto-sanchez--arroba-mirame-punto-net

http://acm.asoc.fi.upm.es/~mr/ ; http://acm.asoc.fi.upm.es/~ivan/
MSN:i_eat_s_p_a _m_for_breakfas t@hotmail.com
Jabber:ivansanc hez@jabber.org ; ivansanchez@kde talk.net
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[Marcin Dobrucki]

Re: String 'starts with' function

Paul Morrison wrote:
[color=blue]
> I have looked at the PHP string functions and I cant see any function to
> check to see whether a string starts with a certain letter or letters. Is
> there any way of doing this with the built in functions?[/color]

preg_match("/^[a-z]/",$string); // strings starting with a,b,c...,z

or whatever you want the string to start with.

/Marcin

[Paul Morrison]

Re: String 'starts with' function

Cheers for your help guys, problem solved!

Paul
[color=blue]
> You can do this in many way, but the easiest way is just get the first
> character of the string using substr(), and compare it to what you want.
>
> It is here:
> http://nl2.php.net/manual/en/function.substr.php
>
> if (substr('abcd', 0,1) == 'a') ...[/color]

[Janwillem Borleffs]

Re: String 'starts with' function

Erwin Moller wrote:[color=blue]
> if (substr('abcd', 0,1) == 'a') ...
>[/color]

Or simply:

$str = 'abcd';

if ($str{0} == 'a') ...


JW