The SplFixedArray::offsetExists() function is an inbuilt function in PHP which is used to check provided index exist or not in an array.
Syntax:
bool SplFixedArray::offsetExists( $index )
Parameters: This function accepts single parameter $index which specifies the requested index.
Return Value: This function returns true if requested index found otherwise return false.
Below programs illustrate the SplFixedArray::offsetExists() function in PHP:
Program 1:
<?php // Create a fixed size array $gfg = new SplFixedArray(6);
$gfg [0] = 1;
$gfg [1] = 5;
$gfg [2] = 10;
// Check whether index exist or not var_dump( $gfg ->offsetExists(2));
?> |
Output:
bool(true)
Program 2:
<?php // 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;
// Iterate array and print values while ( $i < 8) {
// Check whether index exist or not
var_dump( $gfg ->offsetExists( $i ));
$i ++;
} ?> |
Output:
bool(true) bool(true) bool(true) bool(true) bool(true) bool(true) bool(false) bool(false)
Reference: https://www.php.net/manual/en/splfixedarray.offsetexists.php