PHP | xml_error_string() Function
Pre-requisite: XML Basics
The xml_error_string() function is an inbuilt function in PHP which returns the XML parser error description for generated error code.
Syntax:
string xml_error_string( int $error_code)
Parameters: This function accepts single parameter $error_code which is required. It specifies an XML parser error code which is generated from the xml_get_error_code() function.
Return Values: This function returns the XML parser error description for specified error code generated from xml_get_error_code() on success and False on failure.
Note: This function is available for PHP 4.0.0 and newer version.
Below programs illustrate the xml_error_string() function in PHP:
gfg.xml file:
<?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>
Program 1:
<?php
// Invalid XML file
$xml_file= 'gfg.xml';
// XML parser initialization
$xml_parser = xml_parser_create();
// Opening the file in read mode
$file_pointer = fopen($xml_file, 'r');
// Reading data from the file stream
while ($xml_data = fread($file_pointer, 4096)) {
// Parsing the data chunk
if (!xml_parse($xml_parser, $xml_data, feof($file_pointer))) {
// Display error
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 occurred
xml_get_current_line_number($xml_parser) .
"<br>Column: " .
// Column number where the error occurred
xml_get_current_column_number($xml_parser) .
"<br>Byte Index: " .
// Byte index where the current byte occurred
xml_get_current_byte_index($xml_parser) . "<br>"
);
}
}
// Free to xml parser
xml_parser_free($xml_parser);
?>
Output:
ERROR: Mismatched tag Error Code: 76 Line: 7 Column: 13 Byte Index: 208
geeks.xml file:
<?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>
Program 2:
<?php
// Invalid XML file
$xml_file= 'geeks.xml';
// XML parser initialization
$xml_parser = xml_parser_create();
// Opening the file in read mode
$file_pointer = fopen($xml_file, 'r');
// Reading data from the file stream
while ($xml_data = fread($file_pointer, 4096)) {
// Parsing the data chunk
if (!xml_parse($xml_parser, $xml_data, feof($file_pointer))) {
// Display error
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 occurred
xml_get_current_line_number($xml_parser) .
"<br>Column: " .
// Column number where the error occurred
xml_get_current_column_number($xml_parser) .
"<br>Byte Index: " .
// Byte index where the current byte occurred
xml_get_current_byte_index($xml_parser) . "<br>"
);
}
}
// Free to xml parser
xml_parser_free($xml_parser);
?>
Output:
ERROR: String not closed expecting " or ' Error Code: 34 Line: 1 Column: 36 Byte Index: 37
Reference: https://www.php.net/manual/en/function.xml-error-string.php
