PHP Exercises : Get the names of the functions of a module

Last update on May 26 2025 13:17:29 (UTC/GMT +8 hours)

29. List Module Functions

Write a PHP script to get the names of the functions of a module.

Note : Find XML, JSON functions

Sample Solution:

PHP Code:

<?php
// Get the names of all functions provided by the JSON extension
$json_extension_funcs = get_extension_funcs("JSON");
// Print the list of JSON extension functions
print_r($json_extension_funcs);
echo "\n";

// Get the names of all functions provided by the XML extension
$xml_extension_funcs = get_extension_funcs("XML");
// Print the list of XML extension functions
print_r($xml_extension_funcs);
echo "\n";
?>

Explanation:

Get JSON Extension Functions:

The function get_extension_funcs("JSON") retrieves an array of names for all functions provided by the JSON extension in PHP.
The result is stored in the variable $json_extension_funcs.

Print JSON Functions:

The print_r($json_extension_funcs) function is called to output the array of JSON function names in a human-readable format.
An additional echo "\n" adds a newline for better readability in the output.

Get XML Extension Functions:

Similarly, get_extension_funcs("XML") retrieves an array of names for all functions provided by the XML extension.
This result is stored in the variable $xml_extension_funcs.

Print XML Functions:

The print_r($xml_extension_funcs) function outputs the array of XML function names.
Again, echo "\n" adds a newline for better formatting in the output.

Output:

Array                                                       
(                                                           
    [0] => json_encode                                      
    [1] => json_decode                                      
    [2] => json_last_error                                  
    [3] => json_last_error_msg                              
)                                                           
                                                            
Array                                                       
(                                                           
    [0] => xml_parser_create                                
    [1] => xml_parser_create_ns                             
    [2] => xml_set_object                                   
    [3] => xml_set_element_handler                          
    [4] => xml_set_character_data_handler                   
    [5] => xml_set_processing_instruction_handler           
    [6] => xml_set_default_handler                          
    [7] => xml_set_unparsed_entity_decl_handler
	[8] => xml_set_notation_decl_handler                    
    [9] => xml_set_external_entity_ref_handler              
    [10] => xml_set_start_namespace_decl_handler            
    [11] => xml_set_end_namespace_decl_handler              
    [12] => xml_parse                                       
    [13] => xml_parse_into_struct                           
    [14] => xml_get_error_code                              
    [15] => xml_error_string                                
    [16] => xml_get_current_line_number                     
    [17] => xml_get_current_column_number                   
    [18] => xml_get_current_byte_index                      
    [19] => xml_parser_free                                 
    [20] => xml_parser_set_option                           
    [21] => xml_parser_get_option                           
    [22] => utf8_encode                                     
    [23] => utf8_decode                                     
)

Flowchart:

For more Practice: Solve these Related Problems:

Write a PHP script to list all functions available in a specific PHP module and output them alphabetically.
Write a PHP script to count and display the number of functions provided by a given PHP extension.
Write a PHP script to compare the function lists of two modules and display the overlapping functions.
Write a PHP script to search and output module functions that start with a specified prefix.

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