<?php
$user = [];
$user['name'] = 'Вася';
$user['age'] = 13;
//echo "Имя: $user['name'], возраст: $user['age']";
//тут будет посос поэтоому надо клеить:
echo "Имя: " . $user['name'] . ", возраст: " . $user['age'];
echo "\n";
echo "Имя: {$user['name']}, возраст: {$user['age']}";
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