使用'callback'=> function（$ resp）[重复]时出现意外的T_FUNCTION

Question

This question already has an answer here:

• Converting code with Anonymous functions to PHP 5.2 2 answers

I was writing the script to display the social share counters of various API's and while running the PHP file it gives a Parse error: syntax error, unexpected T_FUNCTION. I know it's an older PHP version issue, as mine is 5.2.17 but I need suggestions to overcome this thing. Here's the code:

// Facebook
 array(
'name' => 'facebook',
'method' => 'GET',
'url' => 'https://graph.facebook.com/fql?q=' . urlencode("SELECT like_count, total_count, share_count, click_count, comment_count FROM link_stat WHERE url = \"{$url}\""),
'callback' => function($resp) {
        if(isset($resp->data[0]->total_count)) {
            return (int)$resp->data[0]->total_count;
        } else {
            return 0;
        }
})

</div>

Answer 1

Anonymous functions were introduced in PHP 5.3, so that syntax won't work with your PHP version. Try defining the function first and then passing the name of the function into the array.

function handle_response($resp) 
{
    if(isset($resp->data[0]->total_count)) {
        return (int)$resp->data[0]->total_count;
    } else {
        return 0;
    }
}

array(
    'name' => 'facebook',
    'method' => 'GET',
    'url' => 'https://graph.facebook.com/fql?q=' . urlencode("SELECT like_count, total_count, share_count, click_count, comment_count FROM link_stat WHERE url = \"{$url}\""),
    'callback' => 'handle_response'
)