how to pass a variable to an update sql statement inside a loop

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LEARN ABOUT PHP

pdo.query

PDO.QUERY(3)								 1							      PDO.QUERY(3)

PDO
::query - Executes an SQL statement, returning a result set as a PDOStatement object

SYNOPSIS

       public PDOStatement PDO::query (string  $statement)

DESCRIPTION

       PDOStatement  PDO::query  (string   $statement,	int   $PDO::FETCH_COLUMN,  int	 $colno)  PDOStatement PDO::query (string  $statement, int
       $PDO::FETCH_CLASS, string  $classname, array   $ctorargs)  PDOStatement	PDO::query  (string   $statement,  int	 $PDO::FETCH_INTO,  object
       $object)

       PDO.query(3)  executes  an  SQL	statement  in  a  single  function  call, returning the result set (if any) returned by the statement as a
       PDOStatement object.

	For a query that you need to issue multiple times, you will realize better performance if you prepare a PDOStatement object using PDO.pre-
       pare(3) and issue the statement with multiple calls to PDOStatement.execute(3).

	If  you  do  not  fetch  all of the data in a result set before issuing your next call to PDO.query(3), your call may fail. Call PDOState-
       ment.closeCursor(3) to release the  database  resources	associated  with  the  PDOStatement  object  before  issuing  your  next  call	to
       PDO.query(3).

       Note

	       Although  this  function  is only documented as having a single parameter, you may pass additional arguments to this function. They
	      will be treated as though you called PDOStatement.setFetchMode(3) on the resultant statement object.

PARAMETERS

	      o $statement
		- The SQL statement to prepare and execute.  Data inside the query should be properly escaped.

RETURN VALUES

       PDO.query(3) returns a PDOStatement object, or FALSE on failure.

EXAMPLES

       Example #1

	      Demonstrate PDO::query

	       A nice feature of PDO.query(3) is that it enables you to iterate over the rowset returned by a successfully executed SELECT  state-
	      ment.

	      <?php
	      function getFruit($conn) {
		  $sql = 'SELECT name, color, calories FROM fruit ORDER BY name';
		  foreach ($conn->query($sql) as $row) {
		      print $row['name'] . "	";
		      print $row['color'] . "	";
		      print $row['calories'] . "
";
		  }
	      }
	      ?>

	      The above example will output:

	      apple   red     150
	      banana  yellow  250
	      kiwi    brown   75
	      lemon   yellow  25
	      orange  orange  300
	      pear    green   150
	      watermelon      pink    90

SEE ALSO

       PDO.exec(3), PDO.prepare(3), PDOStatement.execute(3).

PHP Documentation Group 													      PDO.QUERY(3)

Shell Programming and Scripting