PHP experience sharing: Common tips _php Tutorials

PHP, is the abbreviation of English Super Text preprocessing language hypertext preprocessor. PHP is an HTML embedded language, is a server-side implementation of embedded HTML document scripting language, language style has similar to C language, is widely used. This article summarizes the 8 tips commonly used in daily development of PHP.

1. Naming

 
  
  

  
   
   
' checkbox ' name= ' checkbox[] ' value= $dwmyrow
 
  
  

2. Use

When the plan is part of a SQL instruction: if the field that participates in the control is numeric, the

 
  
  

  
   
   
Ifemptyempty($_post[' checkbox '])) { 
  
   
   
$expr = Join (","$_post[' checkbox ']); 
  
   
   
$sql"select * from Tbl_name where field in ($expr)"; 
  
   
   

 
  
  

If the field that participates in the control is numeric, the

 
  
  

  
   
   
Ifemptyempty($_post[' checkbox '])) { 
  
   
   
$expr"'". Join ("', '"$_post[' CheckBox ']). "." ; 
  
   
   
$sql"select * from Tbl_name where field in ($expr)"; 
  
   
   
} 
 
  
  

PHP determines whether a form form is submitted

 
  
  

  
   
   
$action = $HTTP _post_vars ["Button1"]; 
  
   
   
if ($action= ="Submit") 
  
   
   
{ 
  
   
   

  
   
   
} 
  
   
   
Else
  
   
   
{ 
  
   
   

  
   
   
} 
 
  
  

PHP Gets the string length

 
  
  

  
   
   
strlen ($myrow
 
  
  

PHP URL Steering

 
  
  

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

PHP Hyper-Global objects

 
  
  

  
   
   
 
  
   
   
$a = 1; 
  
   
   
$b = 2; 
  
   
   
function Sum () 
  
   
   
{ 
  
   
   
$GLOBALS ["B"$GLOBALS["a"$GLOBALS  ["B"]; 
  
   
   
} 
  
   
   
Sum (); 
  
   
   
echo$b; 
  
   
   
?> 
 
  
  

PHP form Values

If mothod= "get" uses $_get["test" instead of $test
If mothod= "POST" uses $_post["test" instead of $test

PHP Gets the current IP

 
  
  

  
   
   
 $HTTP _server_vars ["REMOTE_ADDR"]?> 
  
   
   
PHP Gets the current time 
  
   
   

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

Hope that through the introduction of this article, can bring you help.

http://www.bkjia.com/PHPjc/445750.html www.bkjia.com true http://www.bkjia.com/PHPjc/445750.html techarticle PHP, is the abbreviation of English Super Text preprocessing language hypertext preprocessor. PHP is an HTML embedded language, is a server-side execution of embedded HTML document script language, ...

