How do you check if a variable has been set in php?


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More PHP Interview Questions

Tell me which programming language does php resemble to?

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List some array functions in php?

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Functions in IMAP, POP3 AND LDAP?

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What is $_ request?

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How can MYSQL functions be available with PHP?

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List some sorting functions in php?

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<?php include ("db.php"); $result = mysql_query("SELECT ques_id FROM questionbank order by ques_id limit 5 "); while($obj=mysql_fetch_array($result)) { $ad1[$obj['ques_id']]++;//Used an array and inserted the database query results into it. } $rand_keys=array_rand($ad1,1); //Did a random array function echo "First random id = ".$ad1[$rand_keys[0]]; echo "<br>Second random id = ".$ad1[$rand_keys[1]]; ?> <!--Its not working. Have any solution for this. -->

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Who is the father of php?

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How do I know my xampp version?

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Can we override static method?

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What is difference between get and post in php?

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Suppose a variable may passed to other page using any of get,post,session,cookie methods and u want to retrive that variable value . what is the syntax?

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