Wordpress $ wpdb-> get_results（…）问题与比较字符串

Question

I am trying to iterate through the rows in a phpbb table called phpbb_posts and extract each entry in phpbb's "post_subject" column and compare its value with a predefined string in Wordpress PHP file but I am having some issues - the expressions don't evaluate to true.

My phpBB's tables are installed in WP's database so I have full access to the values.

See the code below to demonstrate the issue I am having.

function matchPhpBBTopic()
{
  global $wpdb; 

  $wp_post_title_string = get_the_title();

  $result = $wpdb->get_results("SELECT * FROM phpbb_posts"); 

  foreach($result as $row)
  {      
    $phpbb_post_title_array   = array($row->post_subject);  
    $phpbb_post_title_string  = implode("", $phpbb_post_title_array);

    // One of the values in $row->post_subject contains
    // the value in $wp_post_title_string
    if (strcmp($wp_post_title_string, $phpbb_post_title_string) == 0)
    {
      // This line never runs but the $wp_post_title_string value
      // is there, in the table, I've printed it and it's there
      echo 'We found a match!<br>';
    }                                                                              
  }  
}

Any assistance would be appreciated.

So in other words, I have a topic posted in WP and I have exactly the same topic posted in phpBB and I want to iterate through the phpBB's table and when I find the topic, I want to run some code. I don't understand why the "if" expression does not run.

Answer 1

Couldn't you just do:

if ($wp_post_title_string == $phpbb_post_title_string) {}

I don't think strcmp() is appropriate. It converts the string to encoding numbers.

http://us1.php.net/strcmp

Also check for lower and upper case, spaces, and different encodings.

Do strtolower() and trim() first and see what you get.

Also looks like you're imploding subject and title, so don't think they'll match.