如何在PHP中解析這個XML文件？

Question

我無法理解大多數網站上提供的與此相關的示例。我希望能夠獲得用戶輸入，例如「月：1」，「ID：1」，「日期：01-01-2017」，然後顯示確切的一個。

我無法弄清楚如何通過XML移動，這是我目前的想法

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然而，這是行不通的。我怎樣才能得到它使用用戶輸入輸出，但輸入工作。

這是我當前的PHP文件中讀取數據：

<?php 
$xml=simplexml_load_file("XML1.xml") or die("Error: Cannot create object"); 

echo $_GET["SearchChoice"]; 
echo $_GET["IDsend"]; 
echo $_GET["DateSend"]; 

switch ($_GET["SearchChoice"]) 
{ 
    case "ID Search": 
    $passID = intval($_GET["IDsend"]); 
    if ($passID !== 0) 
    { 
     $passID = $passID - 1; 
    } 
    $attr = $xml->finances[$passID]->attributes(); 
    echo "Date: "; 
    echo $attr['date']; 
    echo "<br> Projection: "; 
    echo $xml->finances[$passID]->projection . ",<br>Recommended Staff: "; 
    echo $xml->finances[$passID]->recommendedStaff . ",<br>Staff Wages: "; 
    echo $xml->finances[$passID]->staffWages . ",<br>Actual: "; 
    echo $xml->finances[$passID]->actual . "<br>"; 
    break; 
    case "Date Search": 
    $passDate = strval($_GET["DateSend"]); 
    $nodes = $xml->xpath("/year2017/finances[@date='". $passDate . "']"); 
    if ($nodes) 
     $nodes = array_shift($nodes); 
    break; 
    default: 
    $nodes = NULL; 
} 

if ($nodes) 
{ 
    echo "Date: "; 
    $attr = $nodes->attributes(); 
    echo $attr['date']; 
    echo "<br> Projection: "; 
    echo $nodes->projection . ",<br>Recommended Staff: "; 
    echo $nodes->recommendedStaff . ",<br>Staff Wages: "; 
    echo $nodes->staffWages . ",<br>Actual: "; 
    echo $nodes->actual . "<br>"; 
} 
?> 

這裏是我的XML文件的片段。

<fullyear> 
<month value="1"> 
    <finances id="1" date="01-01-2017"> 
     <projection>414</projection> 
     <recommendedStaff>20</recommendedStaff> 
     <staffWages>100</staffWages> 
     <actual>250</actual> 
    </finances> 
    <finances id="2" date="02-01-2017"> 
     <projection>124</projection> 
     <recommendedStaff>8</recommendedStaff> 
     <staffWages>150</staffWages> 
     <actual>250</actual> 
     </finances> 
    <finances id="3" date="03-01-2017"> 
     <projection>687</projection> 
     <recommendedStaff>20</recommendedStaff> 
     <staffWages>150</staffWages> 
     <actual>250</actual> 
    </finances> 
    <finances id="4" date="04-01-2017"> 
     <projection>587</projection> 
     <recommendedStaff>15</recommendedStaff> 
     <staffWages>150</staffWages> 
     <actual>250</actual> 
    </finances> 
    <finances id="5" date="05-01-2017"> 
     <projection>124</projection> 
     <recommendedStaff>5</recommendedStaff> 
     <staffWages>150</staffWages> 
     <actual>250</actual> 
    </finances> 
    <finances id="6" date="06-01-2017"> 
     <projection>874</projection> 
     <recommendedStaff>22</recommendedStaff> 
     <staffWages>150</staffWages> 
     <actual>250</actual> 
    </finances> 
    <finances id="7" date="07-01-2017"> 
     <projection>574</projection> 
     <recommendedStaff>18</recommendedStaff> 
     <staffWages>150</staffWages> 
     <actual>250</actual> 
    </finances> 
</month> 
    <month value="2"> 
    <finances id="32" date="01-02-2017"> 
     <projection>101</projection> 
     <recommendedStaff>10</recommendedStaff> 
     <staffWages>101</staffWages> 
     <actual>101</actual> 
    </finances> 
    <finances id="33" date="02-02-2017"> 
     <projection>101</projection> 
     <recommendedStaff>10</recommendedStaff> 
     <staffWages>101</staffWages> 
     <actual>101</actual> 
    </finances> 
    <finances id="34" date="03-02-2017"> 
     <projection>101</projection> 
     <recommendedStaff>10</recommendedStaff> 
     <staffWages>101</staffWages> 
     <actual>101</actual> 
    </finances> 
    <finances id="35" date="04-02-2017"> 
     <projection>101</projection> 
     <recommendedStaff>10</recommendedStaff> 
     <staffWages>101</staffWages> 
     <actual>101</actual> 
    </finances> 
    <finances id="36" date="05-02-2017"> 
     <projection>101</projection> 
     <recommendedStaff>10</recommendedStaff> 
     <staffWages>101</staffWages> 
     <actual>101</actual> 
    </finances> 
    </month> 
</fullyear> 

Answer 1

你錯過了幾件事。就像case "ID Search":中的月份，而不是在xpath中提供正確的路徑。

嘗試以下：

<?php 
$xml=simplexml_load_file("XML1.xml") or die("Error: Cannot create object"); 

$_GET["SearchChoice"]="Date Search"; 
$_GET["IDsend"]=1;// these are just sample values 
$_GET["DateSend"]="01-01-2017"; 
$month=1; 
switch ($_GET["SearchChoice"]) 
{ 
    case "ID Search": 
     $passID = intval($_GET["IDsend"]); 
     if ($passID !== 0) 
     { 
      $passID = $passID - 1; 
     } 

     $attr = $xml->month[$month]->finances[$passID]->attributes(); 
     echo "Date: "; 
     echo $attr['date']; 
     echo "<br> Projection: "; 
     echo $xml->month[$month]->finances[$passID]->projection . ",<br>Recommended Staff: "; 
     echo $xml->month[$month]->finances[$passID]->recommendedStaff . ",<br>Staff Wages: "; 
     echo $xml->month[$month]->finances[$passID]->staffWages . ",<br>Actual: "; 
     echo $xml->month[$month]->finances[$passID]->actual . "<br>"; 
     break; 
    case "Date Search": 
     $passDate = strval($_GET["DateSend"]); 
     $nodes = $xml->xpath("/fullyear/month/finances[@date='". $passDate . "']"); 
     if ($nodes) 
      $nodes = array_shift($nodes); 
     break; 
    default: 
     $nodes = NULL; 
} 

if ($nodes) 
{ 
    echo "Date: "; 
    $attr = $nodes->attributes(); 
    echo $attr['date']; 
    echo "<br> Projection: "; 
    echo $nodes->projection . ",<br>Recommended Staff: "; 
    echo $nodes->recommendedStaff . ",<br>Staff Wages: "; 
    echo $nodes->staffWages . ",<br>Actual: "; 
    echo $nodes->actual . "<br>"; 
} 

輸出XPATH日期搜索：

Date: 01-01-2017 
Projection: 414, 
Recommended Staff: 20, 
Staff Wages: 100, 
Actual: 250 

輸出XPATH ID搜索：

Date: 01-02-2017 
Projection: 101, 
Recommended Staff: 10, 
Staff Wages: 101, 
Actual: 101