Using containers in docker, I try to access with php to a database and I get the error "No such file or directory".
docker-compose.yml

version: '3'

services:
  database:
    image: mysql:5.7
    environment:
      MYSQL_ROOT_PASSWORD: 12345
      MYSQL_DATABASE: gexpenses
      MYSQL_USER: gexpenses
      MYSQL_PASSWORD: 1234
    ports:
      - "3311:3306"
    volumes:
      - ./bd:/var/lib/mysql:rw
      - ./bd.sql:/docker-entrypoint-initdb.d/bd.sql:ro
  web:
    build: .
    container_name: php_web
    links:
      - database
    volumes:
      - ./local/:/var/www/html/
    ports:
      - "8100:80"
    stdin_open: true
    tty: true

Dockerfile

FROM php:8.0-apache
COPY ./local /usr/src/dst_folder
WORKDIR /usr/src/dst_folder
RUN apt-get update && apt-get install -y \
    libpq-dev \
    && docker-php-ext-install pdo pdo_mysql

my connection in PHP

<?php

$usr = "gexpenses";
$pwd = "1234";

try {
    $pdo = new PDO("mysql:host=localhost;port=3311;dbname=gexpenses", $usr, $pwd);
    $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected succesfully";
} catch (PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}

I tried to create a bridge connection in case it was a connection problem between containers.
I also tried to change from localhost to database in the php host config but it returns "Connection refused".
Another test was to use

docker inspect -f '{{.Name}} - {{range .NetworkSettings.Networks}}{{{.IPAddress}}{{end}}}' $(docker ps -aq)

return:
/php_web - 172.20.0.3
/database_1 - 172.20.0.2

I have also tried changing localhost to 172.20.0.2 returning "Connection refused".