php和xml使用搜索解析

這是我的xml文件和我的php代碼。我想通過我的PHP表單中的文本框的名字進行搜索，並且我想顯示關於特定學生的所有信息，但問題是我的xpath無法正常工作。任何幫助xpath。php和xml使用搜索解析

<students> 
<student> 
     <firstname>John</firstname> 
     <lasttname>Snow</lasttname> 
     <student_id>160600</student_id> 
     <gender>male</gender> 
     <dob>23-06-95</dob> 
     <age>21</age> 
     <email>[email protected]</email> 
     <mobilenumber>57675060</mobilenumber> 
     <address>Winter Fel</address> 
     <cohort>BSE15PT</cohort> 
     <programme>Software Engineering</programme> 
     <mode>PT</mode> 
    </student> 
    <student> 
     <firstname>meryl</firstname> 
     <lastname>Burton</lastname> 
     <student_id>150500</student_id> 
     <gender>female</gender> 
     <dob>26-07-95</dob> 
     <email>[email protected]</email> 
     <mobilenumber>57800603</mobilenumber> 
     <address>rose hill</address> 
     <cohort>BSE15AFT</cohort> 
     <programme>software engineering</programme> 
     <mode>ft</mode> 
    </student> 
</students> 


<?php 
    if(isset($_POST['search'])) 
    { 
     $xml=simplexml_load_file("studentInstance.xml") or die("Error: Cannot Create Object"); 
     $xpath = $xml; 
     //query the document 
     $name = $_POST['studentname']; 

    $query = $xpath->query("/students/student/[firstname = '$name']"); 
     echo $query; 
    } 

    ?> 
    <!DOCTYPE html> 
    <html> 
     <head> 
      <title>Searching</title> 
     </head> 
     <body> 
     <form method="POST" action="searchRecord.php"> 
      <label>Enter Student Name</label> 
      <input type="text" name="studentname"><br> 
      <input type="submit" name="search" value="search"> 
      </form> 
     </body> 
    </html>

來源

2016-10-04 fairytale

我不知道，我的手機，但學生是我想也許你需要特定的索引/學生/學生[1] /姓名列表 –

刪除查詢的最後一個斜槓。從這個
變化：

"/students/student/[firstname = '$name']"

這樣：

"/students/student[firstname = '$name']"

工作例：

<?php 

$xml = <<< EOF 
<students> 
<student> 
     <firstname>John</firstname> 
     <lasttname>Snow</lasttname> 
     <student_id>160600</student_id> 
     <gender>male</gender> 
     <dob>23-06-95</dob> 
     <age>21</age> 
     <email>[email protected]</email> 
     <mobilenumber>57675060</mobilenumber> 
     <address>Winter Fel</address> 
     <cohort>BSE15PT</cohort> 
     <programme>Software Engineering</programme> 
     <mode>PT</mode> 
    </student> 
    <student> 
     <firstname>meryl</firstname> 
     <lastname>Burton</lastname> 
     <student_id>150500</student_id> 
     <gender>female</gender> 
     <dob>26-07-95</dob> 
     <email>[email protected]</email> 
     <mobilenumber>57800603</mobilenumber> 
     <address>rose hill</address> 
     <cohort>BSE15AFT</cohort> 
     <programme>software engineering</programme> 
     <mode>ft</mode> 
    </student> 
</students> 
EOF; 
$xml = simplexml_load_string($xml); 
$names = $xml->xpath("/students/student[firstname = 'meryl']"); 
print_r($names);

DEMO：

http://ideone.com/Z23XQY

來源

2016-10-04 23:30:22

php和xml使用搜索解析

回答

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