PHP SplFixedArray valid() Function

The SplFixedArray::valid() function is an inbuilt function in PHP which is used to check the array can contain more elements or not. Syntax:

bool SplFixedArray::valid()

Parameters: This function does not accept any parameter. Return Value: This function returns true on success, false otherwise. Below programs illustrate the SplFixedArray::valid() function in PHP: Program 1:

php

<?php

// Create a fixed size array
$gfg = new SplFixedArray(3);

// Move to two step forward
$gfg->next();
$gfg->next();

// Print result
var_dump($gfg->valid());

$gfg->next();

// Print result
var_dump($gfg->valid());

$gfg->next();

// Print result
var_dump($gfg->valid());
?>

Output:

bool(true)
bool(false)
bool(false)

Program 2:

php

<?php

// Create some fixed size array
$gfg = new SplFixedArray(6);
 
$gfg[0] = 1;
$gfg[1] = 5;
$gfg[2] = 1;
$gfg[4] = 15;
$gfg[5] = 22;
 
// Iterate array and print values
while($gfg->valid()) {
     
    // Print current value of index of the array
    var_dump($gfg->valid());
     
    // Move next each time of iteration
    $gfg->next();
}
?>

Output:

bool(true)
bool(true)
bool(true)
bool(true)
bool(true)
bool(true)

Reference: https://www.php.net/manual/en/splfixedarray.valid.php

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