PHP-errors in installing the php environment are mainly caused by the absence of libraries. Error: configure: error: libevent> = 1.4.11 cocould not be found
Solution: yum-y install libevent-devel
Error: configure: error: xml2-config not found. Please check your libxml2 installation.
Fix: yum-y install libxml2 libxml2-devel
Error: configure: error: mcrypt. h not found. Please reinstall libmcrypt.
Solution: yum install libmcrypt-devel
Error: configure: error: Please reinstall the libcurl distribution-easy. h shoshould be in /Include/curl/
Solution: yum-y install curl-devel
Error: If configure fails try -- with-jpeg-dir = configure: error: libpng. (a | so) not found.
Solution: yum-y install libpng-devel
Error:/usr/bin/ld: cannot find-lltdl collect2: ld returned 1 exit status
Solution: yum-y install libtool-ltdl-devel
This is mainly because some libraries are not installed.