Cannot install PDO on CentOS - php

Question

I know there is several instances of this question throughout stackoverflow but I am not finding a solution.
I am running CentOS with Apache and PHP 5.3
A .php script is giving me this error:
Fatal error: Class 'PDO' not found in ...
I ran phpinfo(); and the only place "pdo" exists on the page is in the "Configure Command" '--disable-pdo' line.
I attempted #yum install php-pdo but no packages exist.
I also attempted #pecl install pdo and i get these errors at the end:
/root/tmp/pear/PDO/pdo_dbh.c: In function 'pdo_stmt_instantiate':
/root/tmp/pear/PDO/pdo_dbh.c:410: error: 'zval' has no member named 'refcount'
/root/tmp/pear/PDO/pdo_dbh.c:411: error: 'zval' has no member named 'is_ref'
/root/tmp/pear/PDO/pdo_dbh.c: In function 'pdo_stmt_construct':
/root/tmp/pear/PDO/pdo_dbh.c:435: error: 'zend_fcall_info' has no member named 'object_pp'
/root/tmp/pear/PDO/pdo_dbh.c:458: error: 'zend_fcall_info_cache' has no member named 'object_pp'
/root/tmp/pear/PDO/pdo_dbh.c: In function 'zim_PDO_setAttribute':
/root/tmp/pear/PDO/pdo_dbh.c:752: error: 'zval' has no member named 'refcount'
/root/tmp/pear/PDO/pdo_dbh.c: In function 'zim_PDO_getAttribute':
/root/tmp/pear/PDO/pdo_dbh.c:818: error: 'zval' has no member named 'refcount'
/root/tmp/pear/PDO/pdo_dbh.c: In function 'pdo_hash_methods':
/root/tmp/pear/PDO/pdo_dbh.c:1122: warning: assignment discards qualifiers from pointer target type
/root/tmp/pear/PDO/pdo_dbh.c:1126: warning: assignment discards qualifiers from pointer target type
make: *** [pdo_dbh.lo] Error 1
ERROR: `make' failed
Then on the php.net doc it basically says the package comes standard in php installations since PHP 5.1.
I added the line extension=pdo.so to php.ini and restarted Apache and the problem persists. Any suggestions?

Answer 1

I too have had a similar issue. I am using codeigniter and was getting a "pdo_mysql.so not found" error and tried everything to fix it. I must of searched thru the first 10 pages of google search results for multiple queries. I found tons of people with the same problems but for some reason none of them had an answer/fix. Thru all this reading I learned that "PDO and the PDO_SQLITE driver is enabled by default as of PHP 5.1.0." This got me thinking, "Perhaps I should remove the extension=pdo_mysql.so and pdo.so lines from my php.ini!" I figured php was trying to load an extension that was no longer there since it comes built in now. Sure enough, solved all my php error mess.
PHP 5.4.31 (cli) (built: Aug 19 2014 10:38:48)
Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies
Server version: Apache/2.2.27 (Unix)
Server built: Aug 19 2014 10:33:30
Cpanel::Easy::Apache v3.26.5 rev9999

Answer 2

I'm pretty sure that you're missing the PHP_PDO package. Try to find the PDO package by running the command bellow:
# rpm -qa| grep "pdo"
Mine shows php53u-pdo-5.3.26-1.ius.el5
If you are using php 5.3 then try
# yum install php53u-pdo

Answer 3

I dont know if it is too late for the answer, but I'll post if someone finds this error.
First, I had installed php-pdo in Centos 7 with yum. I viewed phpinfo and it shows the pdo extension but not pdo-mysql.
So, If you then installs php-mysql (yum install php-mysql) it will install automatically the pdo-mysql extension.