What is difference between rest api and restful api?

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What is the use of "echo" in php?

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Tell me what is the actually used php version?

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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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How to copy a file?

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Explain the ternary conditional operator in php?

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What Is a Persistent Cookie?

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How to execute a php script from the command line?

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Is uploaded file php?

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Define urlencode() and urldecode() used in php?

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How to randomly retrieve a value from an array?

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suppose if u want to pass session value using cookies onlu.. what changes i've to made in php.ini file?

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