[SOLVED] value in array

[Vivid Lust]

Hey, how can I check if a value exists in the array: $site[]

 

Thanks!

[rhodesa]

like this?

if(isset($site[2])){
  echo "2 is set";
}

[Maq]

Do you want to see if there is any value or a specific one?  First case use rhodesa's code, latter use in_array.

[rhodesa]

isset() => if a specific key is set

count() => will tell you how many elements are in an array

in_array() => check to see if a value is somewhere in the array *you probably want this one

 

[Vivid Lust]

Hmm,

 

foo[1] = $POST_[bar];

 

how can I check if the value of $POST_[bar] is contained in a foo[] array?

 

Thanks

[rhodesa]

if(in_array($_POST['bar'],$foo)){
  echo "found it";
}

[Vivid Lust]

Im getting this error:

 

Parse error: syntax error, unexpected T_SR

 

Code line:

<?php
<input type="checkbox" name="b" value="http://www.bbc.com" <?php if(in_array("http://www.bbc.com",$b)){echo "checked";}>>BBC<br />
?>

 

thanks for any help

[Maq]

You don't close your PHP tag.

 

>BBC

[Vivid Lust]

Still isnt working!

 

Codes:

 

<?php
$b[1] = $row2['box1'];
$b[2] = $row2['box2'];
$b[3] = $row2['box3'];
$b[4] = $row2['box4'];
$b[5] = $row2['box5'];
$b[6] = $row2['box6'];
$b[7] = $row2['box7'];
$b[8] = $row2['box8'];
$b[9] = $row2['box9'];
$b[10] = $row2['box10'];
$b[11] = $row2['box11'];
$b[12] = $row2['box12'];
$b[13] = $row2['box13'];
$b[14] = $row2['box14'];
$b[15] = $row2['box15'];
?>

 

<input type="checkbox" name="a" value="http://www.cnn.com" <?php if(in_array("http://www.cnn.com",$b)){echo "checked";} ?>>CNN<br />
  <input type="checkbox" name="b" value="http://www.bbc.com" <?php if(in_array("http://www.bbc.com",$b)){echo "checked";}?>>BBC<br />
   <input type="checkbox" name="c" value="http://www.nbc.com" <?php if(in_array("http://www.nbc.com",$b)){echo "checked";} ?>>NBC<br />
    <input type="checkbox" name="d" value="http://www.abcnews.go.com" <?php if(in_array("http://www.abcnews.com",$b)){echo "checked";} ?>>ABC News<br />
     <input type="checkbox" name="e" value="http://www.usatoday.com" <?php if(in_array("http://www.usatoday.com",$b)){echo "checked";} ?>>USA Today<br />
      <input type="checkbox" name="f" value="http://www.msnbc.msn.com" <?php if(in_array("http://www.msnbc.msn.com",$b)){echo "checked";} ?>>MSNBC<br />
       <input type="checkbox" name="g" value="http://www.nytimes.com" <?php if(in_array("http://www.nytimes.com",$b)){echo "checked";} ?>>The New York Times<br />
        <input type="checkbox" name="h" value="http://www.ajc.com" <?php if(in_array("http://www.ajc.com",$b)){echo "checked";}?>>AJC<br />
         <input type="checkbox" name="i" value="http://www.chicagotribune.com" <?php if(in_array("http://www.chicagotribune.com",$b)){echo "checked";} ?>>Chicago Tribune<br />
          <input type="checkbox" name="j" value="http://www.washingtonpost.com" <?php if(in_array("http://www.washingtonpost.com",$b)){echo "checked";} ?>>Washington Post<br />
           <input type="checkbox" name="k" value="http://www.chrone.com" <?php if(in_array("http://www.chrone.com",$b)){echo "checked";} ?>>Chrone<br />
            <input type="checkbox" name="l" value="http://www.denverpost.com" <?php if(in_array("http://www.denverpost.com",$b)){echo "checked";} ?>>Denver Post<br />
             <input type="checkbox" name="m" value="http://www.knoxnews.com" <?php if(in_array("http://www.knoxnews.com",$b)){echo "checked";} ?>>Knox News<br />
              <input type="checkbox" name="n" value="http://www.foxnews.com" <?php if(in_array("http://www.foxnews.com",$b)){echo "checked";} ?>>Fox News<br />
               <input type="checkbox" name="o" value="http://www.skynews.com" <?php if(in_array("http://www.skynews.com",$b)){echo "checked";} ?>>Sky News<br />
  

[Maq]

What do you mean by it's still not working?  Are the check boxes just not being check?  No errors right?  If you don't know how to turn them on put this piece of code at the top of the page:

 

ini_set ("display_errors", "1");
error_reporting(E_ALL);

 

Also, are you sure there are values in the array?  Please print out the array by doing:

 

print_r($b);

[kenrbnsn]

I think you have to rethink how your creating the checkboxes. Here's a version that uses the power of PHP arrays correctly:

<?php
$urls = array('CNN'=>'cnn', 'BBC'=>'bbc', 'NBC'=>'nbc', 'ABC News'=>'abcnews', 'USA Today'=>'usatoday', 'MSNBC'=>'msnbc', 
'The New York Times'=>'nytimes', 'AJC'=>'ajc', 'Chicago Tribune'=>'chicagotribune', 'Washington Post'=>'washingtonpost',
'Chrone'=>'chrone', 'Denver Post'=>'denverpost', 'Knox News'=>'knoxnews', 'Fox News'=>'foxnews', 'Sky News'=>'skynews');
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

<html>
<head>
<title></title>
</head>

<body>
<form action="" method="post">
<?php
$tmp = array();
foreach ($urls as $n => $u) {
$chk = (isset($_POST['url_check'][$u]))?'checked':'';
$tmp[] = '<input type="checkbox" name="url_check[' . $u . ']" value="http://www.' . $u . '.com" ' . $chk . '>'. $n . '<br />';
}
echo implode("\n",$tmp) . "\n";
?>
<input type="submit" name="submit" value="Test It">
</form>  
<?php
if (isset($_POST['submit'])) echo '<pre>' . print_r($_POST,true) . '</pre>';
?>
</body>
</html>

 

Ken