How To connect BItcoin Core with Php

How To connect BItcoin Core with Php

i installed a bitcoind core and i access bitcoin-cli command in linux terminal with developer command(getbalance, getaccountaddress etc.) but i want run this command in php file.

my php code is:

chdir('/home/itr/Downloads/bitcoin/bin');
$output = shell_exec("./bitcoin-cli getbalance");
echo var_dump($output);

bitcoin-cli file path:

/home/itr/Downloads/bitcoin/bin

please tell me what i do?

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