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PHP ReflectionExtension isPersistent () function

Syntax:
void ReflectionExtension::isPersistent (void)
Parameters:This function takes no parameters.Return Value:This function returns true if the specified extension is constant, otherwise it returns false. The following programs illustrate the ReflectionExtension::isPersistent() function in PHP:Program_1:  
// Extension definition $A = ’DOM’ ;  
// Using ReflectionExtension() above // specified extension $extension = new ReflectionExtension ( $A );  
// Calling the isPersistent() function $B = $extension -> isPersistent();  
// Get true or false var_dump ( $B ); ?>
Exit:
bool (true )
Program_2:  
// Using ReflectionExtension() over
// xml extension $extension = new ReflectionExtension ( ’xml’ );  
// Calling the isPersistent() function and
// Get true or false var_dump ( $extension -> isPersistent()); ?>
Exit:
bool (true )
Link: https://www.php.net /manual/en/reflectionextension.ispersistent.php

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