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PHP ReflectionExtension __toString () function

Syntax:
ReflectionExtension::__toString()
Parameters:This function takes no parameters. Return Value:This function returns a string representation of the specified extension object.The following programs illustrate the ReflectionExtension::__ toString() function in PHP:
Program_1:  
// Extension definition $A = ’ DOM’ ;  
// Using ReflectionExtension() above // specified extension $extension = new ReflectionExtension ( $A );  
// Call the __toString() function $B = $extension -> __ toString();  
// Get string representation
// specified extension object. var_dump ( $B ); ?>
Output:
 string (98219) "Extension [ extension # 18 dom version 20031129] {- Dependencies {Dependency [libxml (Required)] Dependency [domxml (Conflicts)]} - Constants [45] {Constant [integer XML_ELEMENT_NODE] {1}... Constant [integer DOM_VALIDATION_ERR] {16}} Method [ public method setUserData] {- Parameters [3] {Parameter # 0 [< required > $key] Parameter # 1 [< required > $data] Parameter # 2 [< required > $handler]}}... Method [ public method registerPhpFunctions] {- Parameters [0] {}}}} }} "
Program_2:  
// Using ReflectionExtens ion() over
// xml extension $extension = new ReflectionExtension ( ’xml’ );  
// Call the __toString() function and
// Get string representation
// specified extension object. var_dump ( $extension -> __ toString()); ?>
Output:
 string (6209) "Extension [ extension # 15 xml version 7.0.33-0ubuntu0.16.04.7] {- Dependencies {Dependencies [libxml (Required)]} - Constants [27] {Constant [ integer XML_ERROR_NONE] {0} ... Constant [string XML_SAX_IMPL] {libxml}} - Functions {Function [ function xml_parser_create] {- Parameters [1] {Parameter # 0 [< optional > $encoding] }}... Function [ function utf8_decode] {- Parameters [1] {Parameter # 0 [< required > $data]}}}} "
Link : https://www.php.net/manual/en/reflectionextension.tostring.php

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