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option value

Posted on 2013-05-12
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Last Modified: 2013-05-13
<option value="want this value">words</option>
how to get the value out of the option
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Question by:rgb192
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6 Comments
 
LVL 21

Expert Comment

by:Mazdajai
ID: 39160187
(?:<option value="(.*?)">)

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Author Comment

by:rgb192
ID: 39160191
Warning: preg_match() [function.preg-match]: Compilation failed: nothing to repeat at offset 0
$text='<option value="">words</option>';
$pattern = '(?:<option value="(.*?)">)';
preg_match($pattern, $text, $option_matches);
print_r($option_matches);
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LVL 15

Expert Comment

by:Jagadishwor Dulal
ID: 39160202
Not so clear your question ??
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LVL 35

Assisted Solution

by:Terry Woods
Terry Woods earned 250 total points
ID: 39160207
$text='<option value="want this">words</option>';
$pattern = '#<option value="([^"]*)">#i';
preg_match($pattern, $text, $option_matches);
print($option_matches[1]);

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LVL 110

Accepted Solution

by:
Ray Paseur earned 250 total points
ID: 39161314
The question mark is a meta-character in regular expressions.  I would instinctively avoid using a meta-character as a delimiter.  And while you can often parse HTML documents with regular expressions, there is nothing guaranteed here, especially if you did not write the HTML.  Invalid HTML can still be rendered by a browser and many developers do not understand or use HTML validation, so your script is always at risk of running into something that will not parse correctly.  

<?php // RAY_temp_rgb192.php
error_reporting(E_ALL);
ini_set('display_errors', TRUE);
ini_set('log_errors',     TRUE);

// SEE http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_28125819.html
$str = <<<EOD
<option value="want this value">words</option>
EOD;

// FIND THE CHARACTER STRING IN THE 'VALUE' ATTRIBUTE
$obj = SimpleXML_Load_String($str);
$sub = (string)$obj->attributes()->value;

// SHOW THE WORK PRODUCT
var_dump($sub);

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Best regards, ~Ray
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Author Closing Comment

by:rgb192
ID: 39162174
these work in finding value

thanks
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