[SOLVED] error handling

[phoenixx]

I somehow need to generate a break if the code generates an error.  Any suggestions (w/ code) would be amazingly appreciated.

 

Here's the loop I need to use the error handling in:

 

$data = @file_get_contents("http://$city.domain.com/$category/index$growloop.html");
preg_match_all('/<p>.*?<a href="([^"]*)".*?<p>.*?href="([^"]*)"/is',$data,$out);
$d = array_combine($out[1], $out[2]);
foreach($d as $k=>$v){

echo $k . " - " . $v . "<br>";
}

[discomatt]

What do you mean... generates an error?

[phoenixx]

once the page I'm scraping runs out of data the following error is printed to the screen:

Warning: array_combine() [function.array-combine]: Both parameters should have at least 1 element in /home/xxxxxxxx/public_html/sandbox/extractormod.php on line 49

 

Warning: Invalid argument supplied for foreach() in /home/xxxxxx/public_html/sandbox/extractormod.php on line 50

 

I would like it to just suppress the error and apply a break.

[Daniel0]

Uhm...

if (isset($out[1]) && isset($out[2])) {
    $d = array_combine($out[1], $out[2]);
    foreach($d as $k => $v) {
        echo $k . " - " . $v . "<br>";
    }
}

?

 

Instead of suppressing the error, why not try to prevent it in the first place?

[The Little Guy]

$data = @file_get_contents("http://$city.domain.com/$category/index$growloop.html");
preg_match_all('/<p>.*?<a href="([^"]*)".*?<p>.*?href="([^"]*)"/is',$data,$out);
if(is_array($out[1]) && is_array($out[2])){
     $d = array_combine($out[1], $out[2]);
     foreach($d as $k=>$v){
          echo $k . " - " . $v . "<br>";
     }
}

[redarrow]

 

to let you no..........

 

get rid of php errors use >>  @  << before any php function ok.......

[discomatt]

Don't use the @ suppressor. Here's what I liek to do when dealing with large blocks that I want to abort on error

 

<pre><?php

error_reporting( 0 );

try {

$file = "http://$city.domain.com/$category/index$growloop.html";
if( ($data = file_get_contents($file)) === FALSE )
	throw new Exception( "Unable to open $file for inclusion" );

preg_match_all('/<p>.*?<a href="([^"]*)".*?<p>.*?href="([^"]*)"/is',$data,$out);
if ( empty($out) )
	throw new Exception( 'No matches were found by regular expression' );

$d = array_combine($out[1], $out[2]);
foreach($d as $k=>$v)
	echo $k . " - " . $v . "<br>";

} catch ( Exception $e ) {
echo 'Exception was caught: ' . $e->getMessage();
}

?></pre>

[phoenixx]

Many thanks to all.  It worked exactly as I hoped it would.  Thanks again.