PHP注意：未定义的指数：stateID在jquery相关选择插件

我与jquery related selects pugin。我有.php文件，使用这样的json方法获取数据：PHP注意：未定义的指数：stateID在jquery相关选择插件

<?php 

// simulate that this proccess might take a while so you can see the loadingMessage option work. 
sleep(1); 

$stateID = $_GET['stateID']; 
$countyID = $_GET['countyID']; 
$townID = $_GET['townID']; 
$html = $_GET['html']; 

$states = array(); 
$states['MA'] = "Massachusetts"; 
$states['VT'] = "Vermont"; 
$states['SC'] = "South Carolina"; 


$counties = array(); 
$counties['MA']['BARN'] = 'Barnstable'; 
$counties['MA']['PLYM'] = 'Plymouth'; 
$counties['VT']['CHIT'] = 'Chittenden'; 
$counties['SC']['ANDE'] = 'Anderson'; 

$towns = array(); 
$towns['MA']['BARN']['CHA'] = "Chatham"; 
$towns['MA']['BARN']['DEN'] = "Dennis"; 
$towns['MA']['BARN']['YAR'] = "Yarmouth"; 
$towns['MA']['PLYM']['BRI'] = "Bridgewater"; 
$towns['MA']['PLYM']['MAR'] = "Marshfield"; 
$towns['MA']['PLYM']['WAR'] = "Wareham"; 
$towns['VT']['CHIT']['BUR'] = "Burlington"; 
$towns['VT']['CHIT']['ESS'] = "Essex"; 

$villages = array(); 
$villages['MA']['BARN']['CHA']['CCHA'] = 'Chatham'; 
$villages['MA']['BARN']['CHA']['SCHA'] = 'South Chatham'; 
$villages['MA']['BARN']['CHA']['NCHA'] = 'North Chatham'; 
$villages['MA']['BARN']['CHA']['WCHA'] = 'West Chatham'; 
$villages['MA']['BARN']['CHA']['CHAP'] = 'Chatham Port'; 
$villages['MA']['BARN']['DEN']['CDEN'] = 'Dennis'; 
$villages['MA']['BARN']['DEN']['SDEN'] = 'South Dennis'; 
$villages['MA']['BARN']['DEN']['WDEN'] = 'West Dennis'; 
$villages['MA']['BARN']['DEN']['EDEN'] = 'East Dennis'; 
$villages['MA']['BARN']['DEN']['DENP'] = 'Dennis Port'; 
$villages['MA']['BARN']['YAR']['CYAR'] = 'Yarmouth'; 
$villages['MA']['BARN']['YAR']['SYAR'] = 'South Yarmouth'; 
$villages['MA']['BARN']['YAR']['WYAR'] = 'West Yarmouth'; 
$villages['MA']['BARN']['YAR']['BASS'] = 'Bass River'; 
$villages['MA']['BARN']['YAR']['YPOR'] = 'Yarmouth Port'; 
$villages['MA']['PLYM']['BRI']['STAN'] = 'Stanley'; 
$villages['MA']['PLYM']['BRI']['SCOT'] = 'Scotland'; 
$villages['MA']['PLYM']['BRI']['PMVI'] = 'Paper Mill Village'; 
$villages['MA']['PLYM']['BRI']['SBRI'] = 'South Bridgewater'; 
$villages['MA']['PLYM']['MAR']['ROCK'] = 'Brant Rock'; 
$villages['MA']['PLYM']['MAR']['GHAR'] = 'Green Harbor'; 
$villages['MA']['PLYM']['MAR']['HILL'] = 'Marshfield Hills'; 
$villages['MA']['PLYM']['MAR']['BLUF'] = 'Ocean Bluff'; 
$villages['MA']['PLYM']['WAR']['ONSE'] = 'Onset'; 
$villages['MA']['PLYM']['WAR']['WCEN'] = 'Wareham Center'; 
$villages['MA']['PLYM']['WAR']['WESW'] = 'West Wareham'; 
$villages['MA']['PLYM']['WAR']['WEWN'] = 'Weweantic'; 
$villages['VT']['CHIT']['BUR']['BURL'] = 'Burlington'; 
$villages['VT']['CHIT']['BUR']['SBUR'] = 'South Burlington'; 
$villages['VT']['CHIT']['ESS']['ESSE'] = 'Essex'; 
$villages['VT']['CHIT']['ESS']['ESSJ'] = 'Essex Junction'; 
$villages['VT']['CHIT']['ESS']['JERI'] = 'Jerico'; 


if($stateID && !$countyID && !$townID){ 
    echo json_encode($counties[$stateID]); 
} elseif($stateID && $countyID && !$townID) { 
    echo json_encode($towns[$stateID][$countyID]); 
} elseif(isset($villages[$stateID][$countyID][$townID])) { 
    echo json_encode($villages[$stateID][$countyID][$townID]); 
} else { 
    echo '{}'; 
} 

?>

这项工作，但是当我检查PHP错误与此代码：

error_reporting(E_ALL); ini_set('display_errors', '1');

，我看到这个错误：

Notice: Undefined index: stateID in C:\xampp\htdocs\test\datasupplier.php on line 6 

Notice: Undefined index: countyID in C:\xampp\htdocs\test\datasupplier.php on line 7 

Notice: Undefined index: townID in C:\xampp\htdocs\test\datasupplier.php on line 8 

Notice: Undefined index: html in C:\xampp\htdocs\test\datasupplier.php on line 9

我该如何解决这个错误？

注意：我现在可以用error_reporting(E_ERROR | E_WARNING | E_PARSE);修复并隐藏错误。

来源

2014-04-15 user27133

[PHP： “注意：未定义变量” 和 “通知：未定义的索引”]的可能重复（http://stackoverflow.com/questions/4261133/php-notice -undefined-variable-and-notice-undefined-index） –

不要隐藏它。 **修理它**。 –

使用isset()与ternary operator

$stateID = (isset($_GET['stateID'])) ? $_GET['stateID'] : ""; 
$countyID = (isset($_GET['countyID'])) ? $_GET['countyID'] : ""; 
$townID = (isset($_GET['townID'])) ? $_GET['townID'] : ""; 
$html = (isset($_GET['html'])) ? $_GET['html'] : "";

来源

2014-04-15 13:18:26

PHP注意：未定义的指数：stateID在jquery相关选择插件

回答

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