Hi! Could we please enable some services and cookies to improve your experience and our website?
Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
$responseAsArray['details'] = [
0 => "недостаточно средств для осуществления перевода на счету аккаунта",
1 => "сумма с комиссией: 1010.0",
2 => "на счету: 1000.0"
];
if (array_key_exists('0', $responseAsArray['details'])) { echo "exists\n"; } else { echo "false\n"; }