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

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

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