Some good example codes for getting started with PHP_PHP Tutorial

1. PHP connects to the database


$dbhost = 'localhost';
$dbuser = 'root'; //Your mysql username
$dbpass = '123456'; //Your mysql password
$dbname = 'data'; //Your mysql library name

//Connect to the local database
$GLOBALS["conn"] = mysql_connect($dbhost,$dbuser,$dbpass);

//Open the database
mysql_select_db($dbname,$GLOBALS["conn"]);

?>

2.php reads a certain field value in the database


//Reads a column of data
$sql="select * from ec_admin" ;
$result = mysql_query($sql,$GLOBALS["conn"]);

printf("Username: %s
n", mysql_result($result,3,"UserName "));
printf("Password: %s
n", mysql_result($result,3,"UserPass"));

?>

3, php insert a certain piece of data


$sql="insert into ec_admin(UserName,UserPass) values('liugongxun2','jakemary2')";
$result =mysql_query($sql,$GLOBALS["conn"])or die(mysql_error());

?>

4,php while loop

< ?php

$sql="select * from ec_admin";
$result = mysql_query($sql,$GLOBALS["conn"]);
while($myrow = mysql_fetch_row($result ))
{
printf("Username %s %s password
",$myrow[1],$myrow[2]);
}

?>

5,php do while loop


$sql="select * from ec_admin";
$result = mysql_query($ sql,$GLOBALS["conn"]);
if($myrow = mysql_fetch_array($result))
{
do
{
printf("Username %s %s password
",$myrow["UserName"],$myrow["UserPass"]);
}while($myrow = mysql_fetch_array($result));
}
?> ;

6, php determines whether the form is submitted


if ($submit)

{}

? >

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