check_configuration.php: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On CentOS possible default full paths are:

/usr/share/pear/data/symfony/bin/check_configuration.php - from package: php-symfony-symfony

You may install the required package with command yum install {package}

Error in other languages:
check_configuration.php: bevel nie gevind nie
check_configuration.php: comandă negăsită
check_configuration.php: comando não encontrado
check_configuration.php: commande introuvable
check_configuration.php: command not found
check_configuration.php: käsku ei ole
check_configuration.php: không tìm thấy lệnh
check_configuration.php: komanda nerasta
check_configuration.php: Kommando nicht gefunden.
check_configuration.php: kommandot finns inte
check_configuration.php: komut yok
check_configuration.php: nie znaleziono polecenia
check_configuration.php: níor aimsíodh an t-ordú
check_configuration.php: no se encontró la orden
check_configuration.php: no s'ha trobat l'ordre
check_configuration.php: opdracht niet gevonden
check_configuration.php: parancs nem található
check_configuration.php: perintah tidak ditemukan
check_configuration.php: príkaz nenájdený
check_configuration.php: příkaz nenalezen
check_configuration.php: команда не найдена
check_configuration.php: командата не е открита
check_configuration.php: 命令找不到
check_configuration.php: コマンドが見つかりません