PHP Tutorials & HowTos

PHP is an open-source server-side scripting language and one of the most popular in web development. This section includes PHP programming related syntax, questions and answers ( rss feed ).

Apache / Nginx / Lighttpd: PHP Disable File Upload

by on April 14, 2013 · 1 comment

I am in the process of setting Apache and PHP for my small business server. I’m not utilizing file upload functionality in any of my PHP scripts. How do I disallow uploading files under CentOS or Ubuntu Linux based LAMP server?

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PHP: Disable APC Module At Command Line CLI Scripts / Cron Scripts

by on November 5, 2012 · 0 comments

I have a PHP application developed and running on LAMP. I have APC installed on the server. APC is a free, open, and robust framework for caching and optimizing PHP intermediate code. The APC based caching is good for my web site, but my cron jobs and php cli scripts fail to
fetch correct data due to caching. How do I disable APC module at the command line (php-cli) under Linux or Unix like operating systems for all my cron jobs?

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PHP Warning: fread(): Length parameter must be greater than 0 in setoptions.php on line 311 Error and Solution

by on October 20, 2012 · 1 comment

One of my php script called setoptions.php is hosted on my new vps server. However, it is not working so I setup php error log as described here and, and I see the following warning repeated in my log file:

PHP Warning: fread(): Length parameter must be greater than 0 in /var/www/html/scripts/setoptions.php on line 311

The line no # 311 is as follows in my php script:
$fname = 'myappconfig.php';
$content = fread($fhandle,filesize($fname));

How do I fix this problem under Unix/Apache/php5 server?

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CentOS / RHEL: Install and Configure phpMyAdmin Administration Of MySQL Database Server

by on July 25, 2012 · 8 comments

How do I install phpMyAdmin to handle the administration of MySQL database server over the World Wide Web under Fedora / Scientific / CentOS / RHEL / Red Hat Enterprise Linux 6.x server systems?

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PHP: Require_once(): Unable To Allocate Memory For Pool Error and Solution

by on July 20, 2012 · 4 comments

I‘m running PHP version 5.3.3 on CentOS / RHEL 6.x with APC php-pecl-apc-3.1.9. However, I’m getting the following warnings in my php server log file:

[01-Jul-2012 10:50:49] PHP Warning: require_once(): Unable to allocate memory for pool. in /var/www/html/includes/admin.php on line 57
[18-Jul-2012 17:00:08] PHP Warning: include_once(): Unable to allocate memory for pool. in //var/www/html/includes/xmlrpc.php on line 55
[18-Jul-2012 17:00:40] PHP Warning: require(): Unable to allocate memory for pool. in /var/www/html/includes/geshi.php on line 2307

How do I fix these php warnings?

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PHP: GeSHi Syntax Highlighter Enable / Disable Line Numbers

by on June 25, 2012 · 0 comments

I‘m using GeSHi under php to highlight a source code. How do I turn on or off line numbers using GeSHi?

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Find Out PHP Version installed On Unix / Linux Server

by on January 21, 2012 · 0 comments

How do I find out php version under Linux operating systems? How do I find out php version under Unix like systems? How to find out what version of PHP is installed on my server?

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