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PHP SplFixedArray offsetExists () function

Syntax:
bool SplFixedArray::offsetExists ($index)
Parameters: This function takes one parameter, $index,which specifies the requested index.Return Value:This function returns true if the requested index is found, otherwise case returns false.The following programs illustrate the function SplFixedArray::offsetExists()in PHP:Program 1:  
// Create a fixed size array $gfg = new SplFixedArray (6); $gfg [0] = 1; $gfg [1] = 5; $gfg [2] = 10;  
// Check if the index exists or not var_dump ( $gfg -> offsetExists (2)); ?>
Exit:
bool (true )
Program 2:  
// Create some fixed size array $gfg = new SplFixedArray (6); $gfg [0] = 1; $gfg [1] = 5; $gfg [2] = 1; $gfg [3] = 11; $gfg [4] = 15; $gfg [5] = 17; $i = 0;  
// Loop through the array and display values ​​ while ( $i < 8) { // Check if the index exists or not var_dump ( $gfg -> offsetExists ( $i )); $i ++; }
?>
Exit:
bool (true ) bool (true) bool (true) bool (true) bool (true) bool (true) bool (false) bool (false)
Link: https://www.php.net/manual/en/splfixedarray.offsetexists.php

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