doumeng3345 2011-08-28 00:55
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测试if语句的无限量布尔值

I have a for statement that runs a few mysql querys but they wont always be the same number of querys like this:

for($i=0;$i<count($phones);$i++){
    $results[$i] = mysql_query("[ACTUAL MYSQL QUERY]");
}

As you can see I put the result into an array, and I want to make sure all of the queries were successful using an if statement. How would I do that, I was thinking eval() but that doesn't seem reliable.

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  • drvpvmz16241016 2011-08-28 00:59
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    You can use array_filter to check the whole $result list at once, because mysql_query will return false for failed queries.

    if (count($results) == count(array_filter($results))) {
        // all succeeded
    }
    

    (I believe you might however run into problems if you keep too many concurrent query handles open; they consume some memory. So maybe you should rather do an immediate mysql_fetch_assoc in your loop, or just keep a boolean, then free the result handles.)

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