PHP xml_get_current_line_number()用法及代碼示例

xml_get_current_line_number()函數是PHP中的內置函數，用於返回XML解析器的當前行號。

用法:

int xml_get_current_line_number( resource $xml_parser )

參數：該函數接受單個參數$xml_parser。它指定要使用的XML解析器。

返回值：此函數返回指定解析器的當前行號，如果成功，則在其上運行；如果失敗，則返回False。

注意：

此函數可用於PHP 4.0.0和更高版本。
這些示例可能不適用於在線IDE。因此，請嘗試在本地服務器或php托管服務器上運行它。

gfg.xml文件：

<?xml version="1.0" encoding="utf-8"?> 
<user> 
    <username> user123 </username> 
    <name> firstname lastname </name> 
    <phone> +91-9876543210 </phone> 
    <detail> I am John Doe. Live in Kolkata, India. </detail> 
</users>

<?php 
  
// XML file containing mismatch tags 
$xml_file = 'gfg.xml'; 
  
// XML parser initialization 
$xml_parser = xml_parser_create(); 
  
// File opening in read mode 
$file_pointer = fopen($xml_file, 'r'); 
   
// Reading data from the file stream 
while ($xml_data = fread($file_pointer, 4096)) { 
      
    // Parse the data chunk 
    if(!xml_parse($xml_parser, $xml_data, 
                        feof($file_pointer))) { 
          
        // Displaying errors 
        die( print "ERROR: " .  
          
            // Error string 
            xml_error_string(xml_get_error_code($xml_parser)) .  
              
            "<br/>Error Code: " .  
              
            // Error code 
            xml_get_error_code($xml_parser) .  
              
            "<br/>Line: " .  
              
            // Line number where the error occured 
            xml_get_current_line_number($xml_parser) .  
              
            "<br/>Column: " .  
              
            // Column number where the error occured 
            xml_get_current_column_number($xml_parser) . 
              
            "<br/>Byte Index: " .  
              
            // Byte index where the current byte occured 
            xml_get_current_byte_index($xml_parser) . "<br/>"
        ); 
    } 
} 
  
// Free to XML parser 
xml_parser_free($xml_parser); 
  
?>

輸出：

ERROR: Mismatched tag
Error Code: 76
Line: 7
Column: 13
Byte Index: 208

geeks.xml文件：

<?xml version="1.0 encoding="utf-8"?> 
<user> 
    <username> user123 </username> 
    <name> firstname lastname </name> 
    <phone> +91-9876543210 </phone> 
    <detail> I am John Doe. Live in Kolkata, India. </detail> 
</user>

程序2:

<?php 
  
// XML file containing mismatch tags 
$xml_file = 'geeks.xml'; 
  
// XML parser initialization 
$xml_parser = xml_parser_create(); 
  
// File opening in read mode 
$file_pointer = fopen($xml_file, 'r'); 
   
// Reading data from the file stream 
while ($xml_data = fread($file_pointer, 4096)) { 
      
    // Parse the data chunk 
    if(!xml_parse($xml_parser, $xml_data, 
                        feof($file_pointer))) { 
          
        // Displaying errors 
        die( print "ERROR: " .  
          
            // Error string 
            xml_error_string(xml_get_error_code($xml_parser)) .  
              
            "<br/>Error Code: " .  
              
            // Error code 
            xml_get_error_code($xml_parser) .  
              
            "<br/>Line: " .  
              
            // Line number where the error occured 
            xml_get_current_line_number($xml_parser) .  
              
            "<br/>Column: " .  
              
            // Column number where the error occured 
            xml_get_current_column_number($xml_parser) . 
              
            "<br/>Byte Index: " .  
              
            // Byte index where the current byte occured 
            xml_get_current_byte_index($xml_parser) . "<br/>"
        ); 
    } 
} 
  
// Free to XML parser 
xml_parser_free($xml_parser); 
  
?>

輸出：

ERROR: String not closed expecting " or '
Error Code: 34
Line: 1
Column: 36
Byte Index: 37

參考： https://www.php.net/manual/en/function.xml-get-current-line-number.php

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