PHP | SimpleXMLIterator valid() Function

PHP SplFixedArray valid() Function

Last Updated : 23 Jun, 2023

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 
  
// 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 
  
// 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

PHP | SimpleXMLIterator valid() Function

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