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
<? 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
<?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
Beginner.xml file:
XML
<? 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
<?php // Invalid XML file $xml_file = 'Beginner.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
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