PHP SplFixedArray key() Function
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The SplFixedArray::key() function is an inbuilt function in PHP which is used to get the key of the current index of the array.
Syntax:
int SplFixedArray::key()Parameters: This function does not accept any parameter. Return Value: This function returns the key of the current index of the array. Below programs illustrate the SplFixedArray::key() function in PHP: Program 1:
<?php // Create a fixed size array $gfg = new SplFixedArray(6); $gfg[0] = 1; $gfg[1] = 5; $gfg[2] = 1; $gfg->next(); $gfg->next(); // Print key of current position echo $gfg->key() . "\n"; ?> |
Output:
Program 2:
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; $gfg[5] = 17; // Iterate array and print values while($gfg->valid()) { // Print Key of each Index echo $gfg->key(). "\n"; $gfg->next(); } ?> |
Output:
Reference: https://www.php.net/manual/en/splfixedarray.key.php0 1 2 3 4 5
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