php读取资料
日期：2014-05-17 浏览次数：20428 次
1。php存文件的时候$testfilename2居然是非要单引号才行，要不然用双引号会报错，以后用变量的时候应该多用单引号
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$testfilename2='D:\ProgramFiles2\AppServ\www\catch28\admin\testmethod6.html';//文件名,可以为.php或者.txt等文本文件
file_put_contents($testfilename,'<!--resultpage-->');
mysql_free_result
(PHP 4, PHP 5)
mysql_free_result — Free result memory
Description
mysql_free_result() will free all memory associated with the result identifier result.
mysql_free_result() only needs to be called if you are concerned about how much memory is being used for queries that return large result sets. All associated result memory is automatically freed at the end of the script's execution.
Parameters
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The result resource that is being evaluated. This result comes from a call to mysql_query().
Return Values
Returns TRUE on success or FALSE on failure.
If a non-resource is used for the result, an error of level E_WARNING will be emitted. It's worth noting that mysql_query() only returns a resource for SELECT, SHOW, EXPLAIN, and DESCRIBE queries.
Examples
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Example #1 A mysql_free_result() example
<?php
$result?=?mysql_query("SELECT?id,email?FROM?people?WHERE?id?=?'42'");
if?(!$result)?{
????echo?'Could?not?run?query:?'?.?mysql_error();
????exit;
}
/*?Use?the?result,?assuming?we're?done?with?it?afterwards?*/
$row?=?mysql_fetch_assoc($result);
/*?Now?we?free?up?the?result?and?continue?on?with?our?script?*/
mysql_free_result(