Hi everyone,

I want to highlight (bold) searchterms in text.
For example, for all words starting with "ethyl":
a) replace "ethyl" by "<b>ethyl</b>"
b) replace "Ethyl" by "<b>Ethyl</b>"
c) replace "ethylene" by "<b>ethylene</b>"
d) but not "methyl" by "<b>methyl</b>"

Now I use:
$patterns[0] = "/ethyl/";
$replacements[0] = "<b>ethyl</b>";
$text = preg_replace($patterns, $replacements, $text);

This works for a) and c), but not for b) and d).
Any idea how to do this ?

TIA, Cor

> > Hi everyone,
> >
> > I want to highlight (bold) searchterms in text.
> > For example, for all words starting with "ethyl":
> > a) replace "ethyl" by "<b>ethyl</b>"
> > b) replace "Ethyl" by "<b>Ethyl</b>"
> > c) replace "ethylene" by "<b>ethylene</b>"
> > d) but not "methyl" by "<b>methyl</b>"
> >
> > Now I use:
> > $patterns[0] = "/ethyl/";
> > $replacements[0] = "<b>ethyl</b>";
> > $text = preg_replace($patterns, $replacements, $text);
> >
> > This works for a) and c), but not for b) and d).
> > Any idea how to do this ?
> >
> > TIA, Cor
> >
>
> Thanks Deniz,
>
> I tried pattern /^ethyl/i but this does not highlight anything.
> I also tried pattern /ethyl/i and this highlights all, but also methyl ...
> Any suggestion ?
>

Yes, the i pattern modifier makes the search case-insensitive, which is what
you want.

The carat ^ means start of string, so would only word if the pattern was at
the beginning of the line - not what you want.

Try something like this:

/(\s|>)ethyl(\s|<)/i

The \s means whitespace so (\s|>) means only match if ethyl is preceded by
whitespace or >, i.e. a closing tag.

Alternatively, have a look at http://suda.co.uk/projects/SEHL/.

Edward

----- Original Message -----
From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
<php-general@lists.php.net>
Sent: Thursday, September 20, 2007 10:38 AM
Subject: RE: [php] highlighting searchterms as bold text


try /^ethyl/i
what you want is ignore case and pattern begins with

--
dd

> -----Original Message-----
> From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> Sent: Thursday, September 20, 2007 1:31 PM
> To: php-general@lists.php.nt
> Subject: [php] highlighting searchterms as bold text
>
> Hi everyone,
>
> I want to highlight (bold) searchterms in text.
> For example, for all words starting with "ethyl":
> a) replace "ethyl" by "<b>ethyl</b>"
> b) replace "Ethyl" by "<b>Ethyl</b>"
> c) replace "ethylene" by "<b>ethylene</b>"
> d) but not "methyl" by "<b>methyl</b>"
>
> Now I use:
> $patterns[0] = "/ethyl/";
> $replacements[0] = "<b>ethyl</b>";
> $text = preg_replace($patterns, $replacements, $text);
>
> This works for a) and c), but not for b) and d).
> Any idea how to do this ?
>
> TIA, Cor
>

Thanks Deniz,

I tried pattern /^ethyl/i but this does not highlight anything.
I also tried pattern /ethyl/i and this highlights all, but also methyl ...
Any suggestion ?

Cor

Hi,

Here's what you need:

RegEx:

/((\w+)?#SearchTermHere#(\w+)?)/i

Of course, replace your #SearchTermHere# with what you need,
i.e. /((\w+)?ethyl(\w+)?)/i

Code sample:

$_textToHighlight='ethyl Lorem Ethyl ipsum MeThYl dolor Ethylene sit';
$_search='/((\w+)?ethyl(\w+)?)/i';
$_replace='<b>\\1</b>';
$_highlightedText=preg_replace($_search,$_replace, $_textToHighlight);

This should output:

<b>ethyl</b> Lorem <b>Ethyl</b> ipsum <b>MeThYl</b> dolor
<b>Ethylene</b> sit

Hope it s,
PuYa

C.R.Vegelin wrote:
>
> ----- Original Message ----- From: "Deniz Dizman (BST UGB)"
> <DENIZ.DIZMAN@fortis.com.tr>
> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
> <php-general@lists.php.net>
> Sent: Thursday, September 20, 2007 11:29 AM
> Subject: RE: [php] highlighting searchterms as bold text
>
>
> thats odd because the regex passes when I test it with this online tool:
> http://samuelfullman.com/team/php/tools/regular_expression_tester_p2.php
>
> --
> dd
>
>> -----Original Message-----
>> From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
>> Sent: Thursday, September 20, 2007 1:59 PM
>> To: Deniz Dizman (BST UGB); php-general@lists.php.nt
>> Subject: Re: [php] highlighting searchterms as bold text
>>
>>
>> ----- Original Message -----
>> From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
>> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
>> <php-general@lists.php.net>
>> Sent: Thursday, September 20, 2007 10:38 AM
>> Subject: RE: [php] highlighting searchterms as bold text
>>
>>
>> try /^ethyl/i
>> what you want is ignore case and pattern begins with
>>
>> --
>> dd
>>
>> > -----Original Message-----
>> > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
>> > Sent: Thursday, September 20, 2007 1:31 PM
>> > To: php-general@lists.php.nt
>> > Subject: [php] highlighting searchterms as bold text
>> >
>> > Hi everyone,
>> >
>> > I want to highlight (bold) searchterms in text.
>> > For example, for all words starting with "ethyl":
>> > a) replace "ethyl" by "<b>ethyl</b>"
>> > b) replace "Ethyl" by "<b>Ethyl</b>"
>> > c) replace "ethylene" by "<b>ethylene</b>"
>> > d) but not "methyl" by "<b>methyl</b>"
>> >
>> > Now I use:
>> > $patterns[0] = "/ethyl/";
>> > $replacements[0] = "<b>ethyl</b>";
>> > $text = preg_replace($patterns, $replacements, $text);
>> >
>> > This works for a) and c), but not for b) and d).
>> > Any idea how to do this ?
>> >
>> > TIA, Cor
>> >
>>
>> Thanks Deniz,
>>
>> I tried pattern /^ethyl/i but this does not highlight anything.
>> I also tried pattern /ethyl/i and this highlights all, but
>> also methyl ...
>> Any suggestion ?
>>
>> Cor
>>
> Hi Deniz,
>
> I tried the referred regex tool as well,
> and I get Bad Result for /^ethyl/i
> and Good Result for /ethyl/i
>
> Cor

Sorry, I didn't read d) right (NOT Methyl),
here is teh new regex :

/(\b#SearchTermHere#(\w+)?)/i

The code sample is the same, replace regex, of course .

Output should be :

<b>ethyl</b> Lorem <b>Ethyl</b> ipsum MeThYl dolor <b>Ethylene</b> sit

Cheers


Puiu Hrenciuc wrote:
> Hi,
>
> Here's what you need:
>
> RegEx:
>
> /((\w+)?#SearchTermHere#(\w+)?)/i
>
> Of course, replace your #SearchTermHere# with what you need,
> i.e. /((\w+)?ethyl(\w+)?)/i
>
> Code sample:
>
> $_textToHighlight='ethyl Lorem Ethyl ipsum MeThYl dolor Ethylene sit';
> $_search='/((\w+)?ethyl(\w+)?)/i';
> $_replace='<b>\\1</b>';
> $_highlightedText=preg_replace($_search,$_replace, $_textToHighlight);
>
> This should output:
>
> <b>ethyl</b> Lorem <b>Ethyl</b> ipsum <b>MeThYl</b> dolor
> <b>Ethylene</b> sit
>
> Hope it s,
> PuYa
>
> C.R.Vegelin wrote:
>>
>> ----- Original Message ----- From: "Deniz Dizman (BST UGB)"
>> <DENIZ.DIZMAN@fortis.com.tr>
>> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
>> <php-general@lists.php.net>
>> Sent: Thursday, September 20, 2007 11:29 AM
>> Subject: RE: [php] highlighting searchterms as bold text
>>
>>
>> thats odd because the regex passes when I test it with this online tool:
>> http://samuelfullman.com/team/php/tools/regular_expression_tester_p2.php
>>
>> --
>> dd
>>
>>> -----Original Message-----
>>> From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
>>> Sent: Thursday, September 20, 2007 1:59 PM
>>> To: Deniz Dizman (BST UGB); php-general@lists.php.nt
>>> Subject: Re: [php] highlighting searchterms as bold text
>>>
>>>
>>> ----- Original Message -----
>>> From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
>>> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
>>> <php-general@lists.php.net>
>>> Sent: Thursday, September 20, 2007 10:38 AM
>>> Subject: RE: [php] highlighting searchterms as bold text
>>>
>>>
>>> try /^ethyl/i
>>> what you want is ignore case and pattern begins with
>>>
>>> --
>>> dd
>>>
>>> > -----Original Message-----
>>> > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
>>> > Sent: Thursday, September 20, 2007 1:31 PM
>>> > To: php-general@lists.php.nt
>>> > Subject: [php] highlighting searchterms as bold text
>>> >
>>> > Hi everyone,
>>> >
>>> > I want to highlight (bold) searchterms in text.
>>> > For example, for all words starting with "ethyl":
>>> > a) replace "ethyl" by "<b>ethyl</b>"
>>> > b) replace "Ethyl" by "<b>Ethyl</b>"
>>> > c) replace "ethylene" by "<b>ethylene</b>"
>>> > d) but not "methyl" by "<b>methyl</b>"
>>> >
>>> > Now I use:
>>> > $patterns[0] = "/ethyl/";
>>> > $replacements[0] = "<b>ethyl</b>";
>>> > $text = preg_replace($patterns, $replacements, $text);
>>> >
>>> > This works for a) and c), but not for b) and d).
>>> > Any idea how to do this ?
>>> >
>>> > TIA, Cor
>>> >
>>>
>>> Thanks Deniz,
>>>
>>> I tried pattern /^ethyl/i but this does not highlight anything.
>>> I also tried pattern /ethyl/i and this highlights all, but
>>> also methyl ...
>>> Any suggestion ?
>>>
>>> Cor
>>>
>> Hi Deniz,
>>
>> I tried the referred regex tool as well,
>> and I get Bad Result for /^ethyl/i
>> and Good Result for /ethyl/i
>>
>> Cor

On Thu, 2007-09-20 at 13:09 +0100, C.R.Vegelin wrote:
> ----- Original Message -----
> From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
> <php-general@lists.php.net>
> Sent: Thursday, September 20, 2007 11:29 AM
> Subject: RE: [php] highlighting searchterms as bold text
>
>
> thats odd because the regex passes when I test it with this online tool:
> http://samuelfullman.com/team/php/tools/regular_expression_tester_p2.php

That makes it syntactically correct... but it tells you nothing about
logic.

> > -----Original Message-----
> > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> > Sent: Thursday, September 20, 2007 1:59 PM
> > To: Deniz Dizman (BST UGB); php-general@lists.php.nt
> > Subject: Re: [php] highlighting searchterms as bold text
> >
> >
> > ----- Original Message -----
> > From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
> > To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
> > <php-general@lists.php.net>
> > Sent: Thursday, September 20, 2007 10:38 AM
> > Subject: RE: [php] highlighting searchterms as bold text
> >
> >
> > try /^ethyl/i
> > what you want is ignore case and pattern begins with
> >
> > --
> > dd
> >
> > > -----Original Message-----
> > > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> > > Sent: Thursday, September 20, 2007 1:31 PM
> > > To: php-general@lists.php.nt
> > > Subject: [php] highlighting searchterms as bold text
> > >
> > > Hi everyone,
> > >
> > > I want to highlight (bold) searchterms in text.
> > > For example, for all words starting with "ethyl":
> > > a) replace "ethyl" by "<b>ethyl</b>"
> > > b) replace "Ethyl" by "<b>Ethyl</b>"
> > > c) replace "ethylene" by "<b>ethylene</b>"
> > > d) but not "methyl" by "<b>methyl</b>"
> > >
> > > Now I use:
> > > $patterns[0] = "/ethyl/";
> > > $replacements[0] = "<b>ethyl</b>";
> > > $text = preg_replace($patterns, $replacements, $text);
> > >
> > > This works for a) and c), but not for b) and d).
> > > Any idea how to do this ?
> > >
> > > TIA, Cor
> > >
> >
> > Thanks Deniz,
> >
> > I tried pattern /^ethyl/i but this does not highlight anything.
> > I also tried pattern /ethyl/i and this highlights all, but
> > also methyl ...
> > Any suggestion ?
> >
> > Cor
> >
> Hi Deniz,
>
> I tried the referred regex tool as well,
> and I get Bad Result for /^ethyl/i
> and Good Result for /ethyl/i

That's because the ^ character matches the beginning of a line and so it
would only match ethyl when it is the first word. As some others pointed
out, you really want to match the word boundary so that you match ethyl
when it is the beginning of a word.

Cheers,
Rob.
--
.................................................. ..........
SwarmBuy.com - http://www.swarmbuy.com

Leveraging the buying power of the masses!
.................................................. ..........

----- Original Message -----
From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
<php-general@lists.php.net>
Sent: Thursday, September 20, 2007 11:29 AM
Subject: RE: [php] highlighting searchterms as bold text


thats odd because the regex passes when I test it with this online tool:
http://samuelfullman.com/team/php/tools/regular_expression_tester_p2.php

--
dd

> -----Original Message-----
> From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> Sent: Thursday, September 20, 2007 1:59 PM
> To: Deniz Dizman (BST UGB); php-general@lists.php.nt
> Subject: Re: [php] highlighting searchterms as bold text
>
>
> ----- Original Message -----
> From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
> <php-general@lists.php.net>
> Sent: Thursday, September 20, 2007 10:38 AM
> Subject: RE: [php] highlighting searchterms as bold text
>
>
> try /^ethyl/i
> what you want is ignore case and pattern begins with
>
> --
> dd
>
> > -----Original Message-----
> > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> > Sent: Thursday, September 20, 2007 1:31 PM
> > To: php-general@lists.php.nt
> > Subject: [php] highlighting searchterms as bold text
> >
> > Hi everyone,
> >
> > I want to highlight (bold) searchterms in text.
> > For example, for all words starting with "ethyl":
> > a) replace "ethyl" by "<b>ethyl</b>"
> > b) replace "Ethyl" by "<b>Ethyl</b>"
> > c) replace "ethylene" by "<b>ethylene</b>"
> > d) but not "methyl" by "<b>methyl</b>"
> >
> > Now I use:
> > $patterns[0] = "/ethyl/";
> > $replacements[0] = "<b>ethyl</b>";
> > $text = preg_replace($patterns, $replacements, $text);
> >
> > This works for a) and c), but not for b) and d).
> > Any idea how to do this ?
> >
> > TIA, Cor
> >
>
> Thanks Deniz,
>
> I tried pattern /^ethyl/i but this does not highlight anything.
> I also tried pattern /ethyl/i and this highlights all, but
> also methyl ...
> Any suggestion ?
>
> Cor
>
Hi Deniz,

I tried the referred regex tool as well,
and I get Bad Result for /^ethyl/i
and Good Result for /ethyl/i

Cor

----- Original Message -----
From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
<php-general@lists.php.net>
Sent: Thursday, September 20, 2007 12:25 PM
Subject: RE: [php] highlighting searchterms as bold text


you probably have some characters before/after the phrase that prevents
the match.
This should do it: (i hope)
/(\S|\s)*\bethyl\b(\S|\s)*/i

--
dd

> -----Original Message-----
> From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> Sent: Thursday, September 20, 2007 3:09 PM
> To: Deniz Dizman (BST UGB); php-general@lists.php.nt
> Subject: Re: [php] highlighting searchterms as bold text
>
>
> ----- Original Message -----
> From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
> To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
> <php-general@lists.php.net>
> Sent: Thursday, September 20, 2007 11:29 AM
> Subject: RE: [php] highlighting searchterms as bold text
>
>
> thats odd because the regex passes when I test it with this
> online tool:
> http://samuelfullman.com/team/php/tools/regular_expression_tes
> ter_p2.php
>
> --
> dd
>
> > -----Original Message-----
> > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> > Sent: Thursday, September 20, 2007 1:59 PM
> > To: Deniz Dizman (BST UGB); php-general@lists.php.nt
> > Subject: Re: [php] highlighting searchterms as bold text
> >
> >
> > ----- Original Message -----
> > From: "Deniz Dizman (BST UGB)" <DENIZ.DIZMAN@fortis.com.tr>
> > To: "C.R.Vegelin" <cr.vegelin@hetnet.nl>; "php-general@lists.php.nt"
> > <php-general@lists.php.net>
> > Sent: Thursday, September 20, 2007 10:38 AM
> > Subject: RE: [php] highlighting searchterms as bold text
> >
> >
> > try /^ethyl/i
> > what you want is ignore case and pattern begins with
> >
> > --
> > dd
> >
> > > -----Original Message-----
> > > From: C.R.Vegelin [mailto:cr.vegelin@hetnet.nl]
> > > Sent: Thursday, September 20, 2007 1:31 PM
> > > To: php-general@lists.php.nt
> > > Subject: [php] highlighting searchterms as bold text
> > >
> > > Hi everyone,
> > >
> > > I want to highlight (bold) searchterms in text.
> > > For example, for all words starting with "ethyl":
> > > a) replace "ethyl" by "<b>ethyl</b>"
> > > b) replace "Ethyl" by "<b>Ethyl</b>"
> > > c) replace "ethylene" by "<b>ethylene</b>"
> > > d) but not "methyl" by "<b>methyl</b>"
> > >
> > > Now I use:
> > > $patterns[0] = "/ethyl/";
> > > $replacements[0] = "<b>ethyl</b>";
> > > $text = preg_replace($patterns, $replacements, $text);
> > >
> > > This works for a) and c), but not for b) and d).
> > > Any idea how to do this ?
> > >
> > > TIA, Cor
> > >
> >
> > Thanks Deniz,
> >
> > I tried pattern /^ethyl/i but this does not highlight anything.
> > I also tried pattern /ethyl/i and this highlights all, but
> > also methyl ...
> > Any suggestion ?
> >
> > Cor
> >
> Hi Deniz,
>
> I tried the referred regex tool as well,
> and I get Bad Result for /^ethyl/i
> and Good Result for /ethyl/i
>
> Cor
>
>
Hi Deniz, Edward, Mike,

Thanks for your suggestions.

Deniz,

pattern /(\S|\s)*\bethyl\b(\S|\s)*/i
makes from any line containing ethyl, such as
Undenatured ethyl alcohol
lines containing only: >ethyl

Edward,

pattern /(\s|>)ethyl(\s|<)/i
makes from: Undenatured ethyl alcohol
Undenaturedethylalcohol (stripping spaces).
I will take a look at http://suda.co.uk/projects/SEHL/.

Mike,

the \W character
makes from Undenatured ethyl alcohol
Undenaturedethylalcohol (stripping spaces).

The \b character makes:
Undenatured ethyl alcohol (okay)
the word methyl is unchanged (okay)
but ethylene keeps also unchanged ...

Thanks anyway !
Cor