避免空字符串代码,PHP代码库,德仔网

代码语言

代码分类

【PHP】避免空字符串

作者:Dezai.CN / 发布于2011/2/10/ 431

<?php
$_POST['id']['other'] = 'val1';
/*
key exist (same as $_POST['id'][other])
*/
echo getRequestParam('id[other]', 'default value');
/*
key doesn't exist, we get default value (same as $_POST['var'])
*/
echo getRequestParam('var', 'default value');
function getRequestParam( $var, $default = '', $method = 'post' )
{
 preg_match_all('!(\w+)!i',$var, $match );
 array_shift($match);
 $_vars = $match[0];
 $ret = null; 
 
 if( strtoupper($method) == 'POST' ) {
 $ret = _findRequestParam($_vars, $_POST);
 }
 elseif( strtoupper($method) == 'GET' ) {
 $ret = _findRequestParam($_vars, $_GET);
 }
 elseif( strtoupper($method) == 'COOKIE' ) {
 $ret = _findRequestParam($_vars, $_COOKIE);
 
 }
 elseif( strtoupper($method) == 'SESSION' ) {
 $ret = _findRequestParam($_vars, $_SESSION);
 } 
 
 if (! $ret )
 return $default;
 else
 return $ret; 
 
}
/**
@access private
*/
function _findRequestParam($vars, $find_in , $curr_key = 0)
{
 static $ret;
 
 if( array_key_exists($vars[$curr_key], $find_in) ) {
 if( count( $vars)-1 == $curr_key ) {
 $ret = $find_in[$vars[$curr_key]];
 }
 elseif( $curr_key < count( $vars)-1 ) {
 _findRequestParam( $vars, $find_in[$vars[$curr_key]], $curr_key+1 ); 
 } 
 }
 return $ret;
}
?>

试试其它关键字

同语言下

可能有用的

Dezai.CN贡献的其它代码(4037)