如何在foreach循環檢查$ _ POST變量有多個陣列

Question

我使用這個代碼來過濾多個字段

$fields = array('ageid', 'heightid', 'waistid'); //database fields 
    $txtfields = array('txtagefrom', 'txtheightfrom', 'txtwaistfrom'); //from range 
    $txttofields = array('txtageto', 'txtheightto', 'txtwaistto'); // To Range 


$conditions = array(); 
foreach (array_map(NULL, $fields, $txtfields, $txttofields) as $x) { 

    list($fields, $txtfields, $txttofields) = $x; 
echo "'" . $fields . "' between '" . $txtfields . "' And '" . $txttofields . "'"; 
} 

，但我堅持，如果某些字段爲空，然後還它顯示的結果，我想多種方法但失敗。

我需要，如果這些領域的任何一個是空的，那麼它不會顯示結果。

看到完整的代碼here

Answer 1

檢查是否$字段爲空或is_null
也有是在你的代碼一個錯字

<input type="text" name="txtwasitto" placeholder="Wasit To" /> 

將其更改爲

<input type="text" name="txtwaistto" placeholder="Wasit To" /> 

化妝確定你從$ _POST刪除XSS

$fields = array('ageid', null, 'heightid', null, 'waistid'); //database fields 
$txtfields = array('txtagefrom', 'testnull', 'txtheightfrom', 'testnull', 'txtwaistfrom'); //from range 
$txttofields = array('txtageto', 'testnull', 'txtheightto', 'testnull', 'txtwaistto'); // To Range 

$conditions = array(); 
foreach (array_map(NULL, $fields, $txtfields, $txttofields) as $x) { 
    list($fields, $txtfields, $txttofields) = $x; 
    if(!empty($_POST[$txtfields]) && !empty($_POST[$txttofields])) 
    echo "'" . $fields . "' between '" . $_POST[$txtfields] . "' And '" . $_POST[$txttofields] . "'"; 
}