PHP - Regular Exp Help

Hey

I'm pretty new to regular expression, so I might have made a silly mistake. I want to check if there are any symbols/special characters (not letters or numbers) in a string. I have the code below.


function validateKeywords($kw) {
if (preg_match("/[^A-Za-z0-9]/", $kw)) {
echo 'validation of keywords failed<br />';
return false; // String contains symbols (not letters or numbers) - incorrect format!
}
else {
echo 'validation of keywords succeeded<br />';
return true; // Correct format
}
}

// Testing
validateKeywords('some random string I wrote for testing purposes'); // should succeed
validateKeywords('some random 10 string I wrote for testing purposes 2010'); // should succeed
validateKeywords('some random, string, I wrote for 19 testing purposes'); // should fail
validateKeywords('some, random, string I wrote, for testing purposes'); // should fail


The problem is that all 4 calls return false and print that the validation failed. So, where did I mess up?

Thanks!

Code: [Select]
&lt;pre&gt;
&lt;pre class=&quot;brush:cpp&quot;&gt;
&lt;pre class=&quot;brush:javascript&quot;&gt;
Those can be cpp,javascript,python ... etc.

I need to change/replace these into:

Code: [Select]
<pre>
<pre class="brush:cpp">
<pre class="brush:javascript">
Those can be cpp,javascript,python ... etc.

I need a generic regular expression for this? Can anyone provide the generic regular expression for this to replace?

Trying=>

$abc = str_replace(array($generic-regular-expression),'<pre> or <pre class="brush:cpp"> or <pre class="brush:javascript"> ..... ',$str);

Hello everyone,   example string

<?php

$string = "";
$string  .= "<textarea id='convert'> 'AA' </textarea>";
$string  .= "<textarea id='convert'> 'BB' </textarea>";
$string  .= "<textarea id='not_convert'> 'AA' </textarea>";
$string  .= "<textarea id='not_convert'> 'DD' </textarea>";

?>

I want to change 'AA' to 'ZZ' which is inside textarea with the id convert only.   How is it possible with the help of regular expression?

Can anyone help me. I have very little knowledge about programming and coding and php, but I am tutoring myself on these.

I want to write a code that will search for a movie in this website search =>
http://myandyourface.com/DELETE/imdb-poster.php. NOTE: in searching for the movie, the movie name with more than one word can be type in in combination form by using the + sign. For example, the movie "the vow", typing that into the search box will be so => the+vow.

As an example, I got the result as show below:

{"Title":"The Vow","Year":"2012","Rated":"PG-13","Released":"10 Feb 2012","Genre":"Drama, Romance","Director":"Michael Sucsy","Writer":"Jason Katims, Abby Kohn","Actors":"Rachel McAdams, Channing Tatum, Sam Neill, Jessica Lange","Plot":"A car accident puts Paige (McAdams) in a coma, and when she wakes up with severe memory loss, her husband Leo (Tatum) works to win her heart again.","Poster":"http://ia.media-imdb.com/images/M/MV5BMjE1OTU5MjU0N15BMl5BanBnXkFtZTcwMzI3OTU5Ng@@._V1_SX320.jpg","Runtime":"N/A","Rating":"N/A","Votes":"N/A","ID":"tt1606389","Response":"True"}

So, this is what I wanted to do,
I wanted to write a php code expression that will search for a specific movie and provide the result as above,and then using the regex and str_replace, and others, I will be able to remove all the above detail information and have ONLY the image link as in above, which is => http://ia.media-imdb.com/images/M/MV5BMjE1OTU5MjU0N15BMl5BanBnXkFtZTcwMzI3OTU5Ng@@._V1_SX320.jpg

I will appreciate any help in creating a code for this

Thanks!

Hi people,  i need to find 16x150gr in Dried Pomegranate Arils16x150gr but the format can vary from Mt Ceder Balsamic Vinegar 12x250ml to Mt Ceder Balsamic Vinegar 2x2ltr to Dried Kalamata Olives 4x1kg. i guess you got the drift i tried something like : '/[1-9]+x[1-9]+[a-z]+/' but i am so useless at regex.   Thank you!