PHP | Ds\Set first() Function
The Ds\Set::first() function is an inbuilt function in PHP which returns the first element of the Set.
Syntax:
void public Ds\Set::first( void )
Parameter: This function does not accepts any parameter.
Return value: This function returns the first value of the Set.
Below programs illustrate the Ds\Set::first() function in PHP:
Program 1:
<?php // PHP program to illustarte the // first() function // Create a set instance $set = new \Ds\Set(); // Adding elements to Set $set->add("Welcome"); $set->add("to"); $set->add("GfG"); // Print the first element from set print_r($set->first()); ?> |
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Output:
Welcome
Program 2:
<?php // PHP program to illustarte the // first() function // Create a set instance $set = new \Ds\Set(); // Adding elements to Set $set->add("10"); $set->add("20"); $set->add("30"); // Print the first element from set print_r($set->first()); ?> |
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Output:
10
Reference: http://php.net/manual/en/ds-set.first.php
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