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POExtracting sub string from web page content
 

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  1. POExtracting sub string from web page content
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    <p>I am parsing web page data using <code>file_get_content</code>. Now I want to extact first 150 character as a description for that url.</p> <pre><code> $url = 'http://crewow.com/CSS_Layout_Tutorial.php'; $data = file_get_contents($url); $content = plaintext($data); $Preview = trim_display(140,$content); //to Show first 100 char of the web page as preview echo $Preview; function trim_display($size,$string) { echo "string is : $string &lt;br/&gt;"; $trim_string = substr($string, 0, 150); $trim_string = $trim_string . "..."; echo "Trim string is $trim_string &lt;br/&gt;"; return $trim_string; } function plaintext($html) { $plaintext = preg_replace('#([&lt;]title)(.*)([&lt;]/title[&gt;])#s', ' ', $html); // remove title //$plaintext = preg_match('#&lt;title&gt;(.*?)&lt;/title&gt;#', $html); // remove comments and any content found in the the comment area (strip_tags only removes the actual tags). $plaintext = preg_replace('#&lt;!--.*?--&gt;#s', '', $plaintext); // put a space between list items (strip_tags just removes the tags). $plaintext = preg_replace('#&lt;/li&gt;#', ' &lt;/li&gt;', $plaintext); // remove all script and style tags $plaintext = preg_replace('#&lt;(script|style)\b[^&gt;]*&gt;(.*?)&lt;/(script|style)&gt;#is', "", $plaintext); // remove br tags (missed by strip_tags) // remove all remaining html $plaintext = strip_tags($plaintext); return $plaintext; } </code></pre> <p>This code works well for some url. For few it does not show any thing in $Preview. Data sent to <code>trim_display()</code> correctly but fails <code>$trim_string = substr($string, 0, 150);</code>. </p> <p>Output of this remail empty.</p>
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    1. USProgramming_crazy
    1. USProgramming_crazy
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      1. VTUpMod
    1. COWhat do you function "plaintext" ?
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      1. USSergey N Lukin
    2. COpossible duplicate of [substr() or mb\_substr() does not work](http://stackoverflow.com/questions/20222999/substr-or-mb-substr-does-not-work)
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      1. POExtracting sub string from web page content
      1. USHarish Singh
    3. CODid you debug $content?
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      1. USVijay Verma
 

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