whats wrong with this code it shows a blank page only

scbookz · July 29, 2009

i dont get error codes i just get a blank page

what i am trying to get is the string content of the <head> tag

what i want is

<head>i want this part to show</head> ---output page---> i want this part to show

---------------------------------------------------------------------------------------

nothing is showing on my out put page just a blank screen not even the word array is showing now

---------------------------------------------------------------------------------------

<?php

$html = file_get_contents("http://webpage.html");

$file = file_get_contents("http://webpage.html");

$x = (get_doc_title($file));

print_r($res[0]);

print_r($res[1]);

print_r($res[2]);

// retrieve page title

function get_doc_title($file){

$h1tags = preg_match_all("/(?<=Purpose<head>).+?(?=<\/head>)/", $html, $patterns, PREG_PATTERN_ORDER);

$res = array();

}

?>

p2grace · July 29, 2009

There isn't a syntax issue... display php errors and see what you learn.

scbookz · July 29, 2009

no errors show up

there are no errors on the output page

it is just a blank page

it refers to a html page that has tags and nothing is showing up on the page

i am new to php programing

but the error codes went away wheni made this code but the array output left also

p2grace · July 29, 2009

There are few logic issues here:

You're calling $res outside of the function scope, so the variable doesn't actually exist.

You're $html variable isn't being used.

You're trying to print an array where I assume you actually want to echo html.

scbookz · July 29, 2009

ok i did as the guy said here is what errors showed up

Notice: Undefined variable: html in /var/www/net/helllooo.php on line 23

Notice: Undefined variable: res in /var/www/net/helllooo.php on line 15

Notice: Undefined variable: res in /var/www/net/helllooo.php on line 16

Notice: Undefined variable: res in /var/www/net/helllooo.php on line 17

23 $h1tags = preg_match_all("/(?<=Purpose<head>).+?(?=<\/head>)/", $html, $patterns, PREG_PATTERN_ORDER);

lines 15 16 17

print_r($res[0]);

print_r($res[1]);

print_r($res[2]);

p2grace · July 29, 2009

Which makes sense because those variables are all out of scope (separated by the function). Are you actually trying to do something like this?:

<?php
$file = file_get_contents("http://webpage.html");
$x = (get_doc_title($file));

echo $x;



// retrieve page title
function get_doc_title($file){
    $h1tags = preg_match_all("/(?<=Purpose<head>).+?(?=<\/head>)/", $file, $patterns, PREG_PATTERN_ORDER);
return $h1tags;
}
?>

scbookz · July 29, 2009

yes let me try this but $patterns is still left out of the picture not sure what that variable is for i willtry that now

brb

scbookz · July 29, 2009

ok something seemed to work but my output is = 0

i only show a zero i want the string between the tags

thanks

mark

scbookz · July 29, 2009

my new code with output of zero ( 0 )

the tagi am trying to grab text from is this

<title>Switzerland and the Alpine Region, 1994: The Most In-Depth Guide to the Beauty and Majesty of Switzerland and the Alpine Region (Fielding's Switzerland and the Alpine Region)</title>

--------------------------------------------

<?php

ini_set('display_errors', 1);

ini_set('log_errors', 1);

ini_set('error_log', dirname(__FILE__) . '/error_log.txt');

error_reporting(E_ALL);

$file = file_get_contents("http://xxxxxxxxxx.html");

$x = (get_doc_title($file));

echo $x;

// retrieve page title

function get_doc_title($file){

$h1tags = preg_match_all("/(?<=Purpose<title>).+?(?=<\/title>)/", $file, $patterns, PREG_PATTERN_ORDER);

return $h1tags;

}

?>

TeNDoLLA · July 29, 2009

If that preg_match_all did return a zero it means that it did not find any occurances of this particular pattern.

scbookz · July 29, 2009

the tagi am trying to grab text from is this

<title>Switzerland and the Alpine Region, 1994: The Most In-Depth Guide to the Beauty and Majesty of Switzerland and the Alpine Region (Fielding's Switzerland and the Alpine Region)</title>

scbookz · July 29, 2009

oh ok maybe i was not clear i am trying to print the information between the tags

the html page has a title but i want to grab the string between the title on the source page

and then print is in my output

you get a free book if this works

scbookz · July 29, 2009

here is the html code from the page i am trying to grab from

<HTML>

<HEAD>

<title> Switzerland and the Alpine Region, 1994: The Most In-Depth Guide to the Beauty and Majesty of Switzerland and the Alpine Region (Fielding's Switzerland and the Alpine Region)</title>

</HEAD>

i am trying to grab the string between tags and not anoutput of if it finds or not

i hope i am making myself clear on this

TeNDoLLA · July 29, 2009

Not really expert on regular expressions but you could try this

<?php
preg_match_all('/<title>(.*)<\/title>/', $html, $matches, PREG_PATTERN_ORDER);
var_dump($matches[1][0]);
?>

scbookz · July 29, 2009

crazyyyyyy

very good man

getting closer here is my output now

---------------------------------------------

string(190) " Switzerland and the Alpine Region, 1994: The Most In-Depth Guide to the Beauty and Majesty of Switzerland and the Alpine Region (Fielding's Switzerland and the Alpine Region)"

-----------------------------------------------------------------------------

how do i get rid of the string(190) comment?

TeNDoLLA · July 29, 2009

Yeah well the var_dump() -function is a good tool to debug your code and it will print the type of the variable, in this case it is string, length of the string and the string itself. So you have to put the match found by the regexp into variable or echo or do whatever you want with it..

<?php
$myVariable = $matches[1][0];
echo $myVariable;

scbookz · July 29, 2009

i found something better that works thanks to your help

but my last thing is to use a minus in echo

i have set words i want to subtract out of an echo statement

i will need to research this and then i am done

----------------------------------------------------------------------

echo $x-(a word phrase) not sure if i can do this but has to be a way

-----------------------------------------------------

$file = file_get_contents("http://website.html");

$x = (get_doc_title($file));

echo $x;

// retrieve page title

function get_doc_title($file){

$h1tags = preg_match_all('/<title>(.*)<\/title>/', $file, $matches, PREG_PATTERN_ORDER);

var_export($matches[1][0]);}

?>

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