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PHP SplObjectStorage next () Function

Syntax:
void SplObjectStorage::next()
Parameters:this the function does not take any parameters.Returned value:this function does not return any value.The programs below illustrate the function SplObjectStorage::next()in PHP:Program 1:  
// Create empty SplObjectStorage $str = new SplObjectStorage(); $obj = new StdClass; $obj2 = new StdClass;  
// Use the attach() function to add an object $str -> attach ( $obj , "GFG" ); $str -> attach ( $obj2 , "Geeks" ); $str -> rewind ();  
// Get current data var_dump ( $str -> getInfo());  
// Go to next item $str -> next();  
// Print the result of the next post var_dump ( $str -> getInfo()); ?>
Exit:
string (3 ) "GFG" string (5) "Geeks"
Program 2:  
// Create empty SplObjectStorage $str = new SplObjectStorage(); $obj1 = new StdClass; $obj2 = new StdClass; $obj3 = new StdClass; $obj4 = new StdClass;  
// Use the attach() function to add an object $str -> attach ( $obj1 , "GeksforGeeks" ); $str -> attach ( $obj2 , "GFG" ); $str -> attach ( $obj3 ); $str -> attach ( $obj4 , "DSA" ); $str -> rewind ();  
// Iterate and print data for each index while ( $str -> valid()) { // Get index $index  = $str -> key(); $object = $str -> current(); $data  = $str -> getInfo(); var_dump ( $index , $data ); // Move each time on next entry $str -> next(); }
?>
Exit:
int (0 ) string (12) "GeksforGeeks" int (1) string (3) "GFG" int (2) NULL int (3) string (3) "DSA"
Link: https://www.php.net/manual/en/splobjectstorage.next.php

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