PHP SplObjectStorage valid() Function
Last Updated :
23 Jun, 2023
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The SplObjectStorage::valid() function is an inbuilt function in PHP which is used to check the current storage entry is valid or not.
Syntax:
php
php
bool SplObjectStorage::valid()Parameters: This function does not accept any parameter. Return Value: This function returns true if the iterator entry is valid, false otherwise. Below programs illustrate the SplObjectStorage::valid() function in PHP: Program 1:
<?php
// Create an empty SplObjectStorage
$str = new SplObjectStorage();
$obj = new StdClass;
$obj2 = new StdClass;
$obj3 = new StdClass;
// Use attach() function to
// add object
$str->attach($obj, "GFG");
// Use rewind() function to rewind the
// iterator to the first storage element
$str->rewind();
// Use valid() function to check current
// iterator is valid entry or not
print($str->valid());
?>
Output:
Program 2:
1
<?php
// Create an empty SplObjectStorage
$gfg = new SplObjectStorage();
$obj1 = new StdClass;
$obj2 = new StdClass;
$obj3 = new StdClass;
$gfg[$obj1] = "GFG";
$gfg[$obj2] = "GeeksClasses";
$gfg[$obj3] = "SUDO";
// Use rewind function
$gfg->rewind();
while($gfg->valid()) {
var_dump($gfg->getInfo());
// Moving to next element
$gfg->next();
}
?>
Output:
Reference: https://www.php.net/manual/en/splobjectstorage.valid.php
string(3) "GFG" string(12) "GeeksClasses" string(4) "SUDO"