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$abc='my name is tome';
echo $abc //½á¹ûÊÇ:my name is tom
echo '$abc' //½á¹ûÊÇ:$abc
echo "$abc" //½á¹ûÊÇ:my name is tom
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select    *    from    abc_table where user_name='abc';
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SQLstr = "select    *    from abc_table where user _name= 'abc'" ;
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$user_name = $_REQUEST['user_name']; //×Ö·û´®±äÁ¿
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$user=array ("name"=>
$_REQUEST['user_name‘,"age"=>$_REQUEST['age'];//Êý×é±äÁ¿
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SQLstr = "select    *    from abc_table where user_name = ' " .
$user_name . " ' ";
SQLstr = "select * from abc_table where user_name = ' " .
$user["name"] . " ' ";
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SQLstr="select * from abc_table where user_name = ' abc ' " ;
SQLstr="select * from abc_table where user_name =' " . $user _name .
" ' ";
SQLstr="select * from abc_table where user_name =' " . $user["name"]
. " ' ";
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how to install apache, PHP and MySQL on Linux

how to install apache, PHP and MySQL on Linux
This tutorial explains the installation of Apache web server, bundled with PHP and MySQL server on a Linux machine. The tutorial is primarily for SuSE 9.2, 9.3, 10.0 & 10.1 operating systems, but most of the steps ought to be valid for all Linux-lik ......

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