fread usage

[vito]

a week ago 2 kind persons suggested me to use fread to read a result page.
i've been working for it but just can't get what i want.
$keyword ="big problem";
$startfig = rand(0,60);
//$theFile
="http://images.google.com/images?q=\"".$keyword."\"&start=".$startfig;
//$theFile
="http://images.google.com/images?q=\"".$keyword."\"&start=".strval($startfig );
$theFile ="http://images.google.com/images?q=acd";

if (($f = fopen($theFile, 'r')) === false) exit;

$contents = fread($f, (9*(1024*1024)));

echo "$contents";
fclose ($f);

$matchno = preg_match_all("/.*<img src=/images?q=tbn:.*:(.*)
width=.*>.*/", $contents, $regs);
$imgurl = $regs[rand(0,$matchno-1)];

why can't i retrieve the result obtained from google image search?

[Henrik Hansen]

"vito" <vi*********@yahoo.com.hk> writes:

a week ago 2 kind persons suggested me to use fread to read a result page.
i've been working for it but just can't get what i want.

why can't i retrieve the result obtained from google image search?

Dont you get any result at all in your $content var? no content at
all?

Also I would recommend you use file_get_contents() instead, it's alot
easier that fread and fopen.

--
Henrik Hansen

[Schraalhans Keukenmeester]

vito wrote:

a week ago 2 kind persons suggested me to use fread to read a result page.
i've been working for it but just can't get what i want.
$keyword ="big problem";
$startfig = rand(0,60);
//$theFile
="http://images.google.com/images?q=\"".$keyword."\"&start=".$startfig;
//$theFile
="http://images.google.com/images?q=\"".$keyword."\"&start=".strval($startfig );
$theFile ="http://images.google.com/images?q=acd";

if (($f = fopen($theFile, 'r')) === false) exit;

$contents = fread($f, (9*(1024*1024)));

echo "$contents";
fclose ($f);

$matchno = preg_match_all("/.*<img src=/images?q=tbn:.*:(.*)
width=.*>.*/", $contents, $regs);
$imgurl = $regs[rand(0,$matchno-1)];

why can't i retrieve the result obtained from google image search?

The url you feed to google does NOT bring me any results at all, instead
I get this error:
"The requested URL /?q=%22big%20problem%22&start=30 was not found on
this server."

Looks like google likes another syntax. "big problem" fed to the image
search page on my google yields the following url:

http://images.google.nl/images?svnum...22&btnG=Zoeken

Of course your result will be slightly different, you don't get the
Dutch google I assume. The quotes are never used AFAIK in google.

Maybe your problem lies here, not in the fread you use.
Sh.

--
Our POP server was kidnapped by a weasel.

[Jerry Stuckle]

vito wrote:

a week ago 2 kind persons suggested me to use fread to read a result page.
i've been working for it but just can't get what i want.
$keyword ="big problem";
$startfig = rand(0,60);
//$theFile
="http://images.google.com/images?q=\"".$keyword."\"&start=".$startfig;
//$theFile
="http://images.google.com/images?q=\"".$keyword."\"&start=".strval($startfig );
$theFile ="http://images.google.com/images?q=acd";

if (($f = fopen($theFile, 'r')) === false) exit;

$contents = fread($f, (9*(1024*1024)));

echo "$contents";
fclose ($f);

$matchno = preg_match_all("/.*<img src=/images?q=tbn:.*:(.*)
width=.*>.*/", $contents, $regs);
$imgurl = $regs[rand(0,$matchno-1)];

why can't i retrieve the result obtained from google image search?

OK, Vito, what happens when you try this?

One thing I see as a possible problem - you're reading up to 9MB. Do you have
that much memory available to PHP? You might have run out. Check your error logs.

BTW - do you have Google's permission? Last I heard they didn't like people
doing this.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================

[vito]

after reading your comments,

i made some changes.

1)switch to use "acd" instead of "big problem"
2)try use file_get_contents instead
$theFile ="http://images.google.com/images?q=acd";
the $content contains:

<img
src=/images?q=tbn:8w7TF3ADocTy3M:cheminf.cmbi.ru.nl/cheminf/isis/pict/acd_price.gif
width=134 height=105>

but i just don't know why

$matchno = preg_match_all("/.*<img src=/images?q=tbn:.*:(.*) width=.*>.*/",
$content, $regs);

returns nothing. ($matchno echo nothing)

furthermore, how is Jerry able to count the size? could anybody tell me?
indeed, i need not retrieve the whole content but just a single little image
is grateful.

[Jerry Stuckle]

vito wrote:

after reading your comments,

i made some changes.

1)switch to use "acd" instead of "big problem"
2)try use file_get_contents instead
$theFile ="http://images.google.com/images?q=acd";
the $content contains:

<img
src=/images?q=tbn:8w7TF3ADocTy3M:cheminf.cmbi.ru.nl/cheminf/isis/pict/acd_price.gif
width=134 height=105>

but i just don't know why

$matchno = preg_match_all("/.*<img src=/images?q=tbn:.*:(.*) width=.*>.*/",
$content, $regs);

returns nothing. ($matchno echo nothing)

furthermore, how is Jerry able to count the size? could anybody tell me?
indeed, i need not retrieve the whole content but just a single little image
is grateful.

Vito,

I was looking at your fread() call - you say get up to 9*1024*1024 bytes - which
is 9 mb.

And you are getting the correct information back. When you fetch a page
containing images, the webserver returns <img> tags. The browser must then go
out and fetch each of those images.

Open the page with your query and then look at the HTML source. This is what
your program should be getting. Writing that to the user's browser should cause
the browser to initiate further connections to retrieve the data.

As for your regex - ? is a control character (makes the preceding character
optional). You need to escape it, i.e.

... images\?q=tbn ...

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
js*******@attglobal.net
==================