phpdcd: 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/bin/phpdcd - from package: php-phpunit-phpdcd

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

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