PHP Tips Tutorial: PHP Web site development commonly used 8 tips

This article summarizes 8 tips that are commonly used in PHP's daily development.

PHP Batch Gets the value of the checkbox

1, naming

<input type= ' checkbox ' name= ' checkbox[] ' Value=dwmyrow[banzhu]/>

2. Use

When the plan is treated as part of the SQL directive: if the field that participates in the control is numeric, the

if (! empty (_post[' checkbox ')) {
Expr = Join (",", _post[' checkbox '));
sql = "SELECT * from Tbl_name where field in (expr)";
}

If the field participating in the control is numeric, the

if (! empty (_post[' checkbox ')) {
expr = "'". Join ("', '", _post[' checkbox ']). "
sql = "SELECT * from Tbl_name where field in (expr)";
}

PHP determines whether form forms are submitted

action=http_post_vars["Button1"];
if (action== "submit")
{
To perform a form operation
}
Else
{
Reading default values
}

PHP gets string length

Strlen (Myrow[1])

PHP URL Turn

Header ("Location:". _server["Http_referer"]);

PHP Hyper Global Objects

<?php
A = 1;
b = 2;
function Sum ()
{
Globals["B"] = globals["a"] + globals["B"];
}
Sum ();
Echo b;
?>

PHP form Values

If mothod= "get" replaces test with _get["test"
If mothod= "POST" replaces Test with _post["test"

PHP Gets the current IP

<?=http_server_vars["REMOTE_ADDR"]?>

PHP Gets the current time

<?php
echo Date ("y-m-d g:i:s");
?>
Date ("Y year M month D Day")
Date ("Y-n-j")