regex find and replace 'input tags'

Question

I'm quite new to regular expression which I have trial and error test.

How can I replace:

<input name="token" type="text" id="test" value="">

like it will first search for the id="test" if the id exist it will set a 'variable' in value="" tags.

but if value="" has containing a varianble

ex:

<input name="token" type="text" id="test" value="token" />

it should replace the whole value="token" into a a desired variable.

preg_match('%<[^>]*(id="test"[^>]*>)([^<]*)</[^>]*>%', $html, $match);

which is it only search for HTML tags which has closing tags

ex: <div id="test"></div>

and for the value from 'input tags'. I came up with this solution which is not good.

$data['token'] = 'test';

str_replace(array_keys($data),array_values($data),$html);

can someone help me and give me some tips on regular expression on PHP. thank you.

Don't use regular expressions for this, use an HTML parser instead. — Ibrahim Najjar
– Ibrahim Najjar, Commented Nov 16, 2013 at 11:28
yes I know but I just want to try. Like I stated I want to try trial and error — Darline
– Darline, Commented Nov 16, 2013 at 11:28

Detention · Accepted Answer · 2013-11-16 13:10:24Z

1

try:

<[^>]*value="(['token'"]*)"[^>]*>


Negated char class [^>] 0 to infinite times 
[greedy] matches any character except:> The character >
value=" Literal value="
1st Capturing group (['token'"]*)
Char class ['token'"] 0 to infinite times [greedy] matches:
'token'" One of the following characters 'token'"

edited Nov 16, 2013 at 13:10

answered Nov 16, 2013 at 12:36

Detention

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