phpci: command not found

Have You tried accessing the binary with the full path?

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/phpci - from package: php-bartlett-PHP-CompatInfo

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