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I'm using centos 6.7, http 2.4.17, mysql 5.1, php 5.5.30. web page is working fine but at bottom it is giving below error.

Fatal error: Call to undefined function gzopen() in /etc/apache2/htdocs/sites/all/modules/smart_ip/includes/smart_ip.utility.inc on line 454

I've installed zlib through source code but still its not enabling it after configuring php, restarting apache and system.

php -i|grep -i zlib
gzip compression => disabled (install ext/zlib)

How to enable gzip compression ?

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6
  • I think your PHP is not linked with zlib properly. Can you post ldd $(which php) onto pastebin? Commented Dec 9, 2015 at 12:59
  • # ldd $(which php) linux-vdso.so.1 => (0x00007fff39ff5000) libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007f3eb5ffd000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00007f3eb5de3000) librt.so.1 => /lib64/librt.so.1 (0x00007f3eb5bda000) libpng12.so.0 => /usr/lib64/libpng12.so.0 (0x00007f3eb59b4000) libz.so.1 => /lib64/libz.so.1 (0x00007f3eb579e000) libm.so.6 => /lib64/libm.so.6 (0x00007f3eb5519000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f3eb5315000) libnsl.so.1 => /lib64/libnsl.so.1 (0x00007f3eb50fc000) libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x00007f3eb4da8000) Commented Dec 10, 2015 at 12:05
  • libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f3eb4b8b000) libc.so.6 => /lib64/libc.so.6 (0x00007f3eb47f7000) /lib64/ld-linux-x86-64.so.2 (0x00007f3eb623f000) libfreebl3.so => /lib64/libfreebl3.so (0x00007f3eb45f3000) Commented Dec 10, 2015 at 12:05
  • Oh, sorry. Due to libpng12 pulled in there is no clear way to indicate that php is configured without zlib. Does your php -i list configure parameters? Commented Dec 10, 2015 at 12:13
  • Have you installed the php55w-common package, specifically, php-zlib? Commented Jan 31, 2016 at 5:44

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