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PHP print keys from an object?
Let’s say the following is our object −
$employeeDetails = (object) [ 'firstName' => 'John', 'lastName' => 'Doe', 'countryName' => 'US' ];
We want the following output i.e. only the keys −
firstName lastName countryName
To display only the keys from an object, use array_keys() in PHP.
Example
<!DOCTYPE html> <html> <body> <?php $employeeDetails = (object) [ 'firstName' => 'John', 'lastName' => 'Doe', 'countryName' => 'US' ]; $allKeysOfEmployee = array_keys((array)$employeeDetails); echo "All Keys are as follows=","<br>"; foreach($allKeysOfEmployee as &$tempKey) echo $tempKey,"<br>"; ?> </body> </html>
Output
All Keys are as follows= firstName lastName countryName
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