Category Archives: PHP

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21
01
25
 2 Comments

Migrating a WordPress website from PHP 7.4 to PHP 8.3.6

Posted by | PHP, Ubuntu |

Added the following

define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );

to wp-config.php and got the following error message:

Fatal error: Uncaught Error: Call to undefined function wp_kses() in /home/devnote/www/wp-includes/functions.php:6073 
Stack trace:
#0 /home/devnote/www/wp-includes/functions.php(5554): wp_trigger_error()
#1 /home/devnote/www/wp-includes/class-wpdb.php(1333): _deprecated_function()
#2 /home/devnote/www/wp-content/sunrise.php(11): wpdb->escape()
#3 /home/devnote/www/wp-includes/ms-settings.php(47): include_once('...')
#4 /home/devnote/www/wp-settings.php(155): require('...')
#5 /home/devnote/www/wp-config.php(107): require_once('...')
#6 /home/devnote/www/wp-load.php(50): require_once('...')
#7 /home/devnote/www/wp-blog-header.php(13): require_once('...')
#8 /home/devnote/www/index.php(17): require('...')
#9 {main} thrown in /home/devnote/www/wp-includes/functions.php on line 6073
(more…)
04
10
22
 1 Comment

How I fixed my contact form

Posted by | PHP, Ubuntu |

When I switched to PHP 7.4 I forgot to specify sendmail_path parameter in php.ini and my contact form stopped working. Today I found sendmail_path parameter in PHP 7.0:

cd /etc/php
find . -name "php.ini"

./7.0/fpm/php.ini
./7.0/cgi/php.ini
./7.0/cli/php.ini
./7.4/fpm/php.ini
./7.4/cli/php.ini

grep sendmail ./7.0/fpm/php.ini

sendmail_path = "/usr/sbin/sendmail -t -f *****@yandex.ru -i"
(more…)
31
07
22
 1 Comment

Switching to PHP 7.4 on Ubuntu 16.04

Posted by | PHP, Ubuntu |

Some WordPress plugins stopped working with PHP 7.0 on my Ubuntu 16.04 server and I switched to PHP 7.4 with the following commands:

sudo add-apt-repository ppa:jczaplicki/xenial-php74-temp
sudo apt-get update
sudo apt-get install php7.4 php7.4-fpm php7.4-cli php7.4-mysql php7.4-dom php7.4-mbstring -y
service php7.4-fpm status
cd /etc/php/7.4/fpm/pool.d
sudo mv www.conf www.conf.dist
sudo mv ../../../7.0/fpm/pool.d/devnote.conf .
sudo service php7.0-fpm reload
sudo service php7.4-fpm reload
(more…)
01
07
18
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PHP script that saves client IP address to a file.

Posted by | PHP, Ubuntu |

Below I wrote down a simple PHP script that saves client IP address to a file. If the IP address of your home machine periodically changes, you can store it on a web server once a minute by scheduling a task like this:

sudo crontab -u <user> -e

* * * * * wget -q -O /dev/null -o /dev/null "https://yourwebsite.com/ip.php?rig=rig1&password=XXXXX"

where ip.php is the following PHP script:
(more…)

16
06
13
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How to debug a PHP script

Posted by | PHP |

It could be useful sometimes to know what variables are defined at particular point of PHP script in order to have a better understanding of the code you are debugging. In contrast with C++, PHP has a magic function get_defined_vars ( void ) that  returns an array of all defined variables with their values so we can output all variable names with the following line of code:

print_r(array_keys(get_defined_vars()));

(more…)

12
01
13
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How to pass a Dictionary<Key, Value> from C# to PHP

Posted by | C#, PHP | Tagged , |

I believe that the simplest way to pass complex data from C# to PHP is through WCF service. See my previous post How to implement WCF service in PHP for more details.

Let assume we have a WCF service contract that has the following method with some nested dictionary as a parameter:

[ServiceContract]
public interface IStore
{
    [OperationContract]
    void UpdateRows(Dictionary<int, Dictionary<string, object>> rows);
}

Below I provided the sample implementation of UpdateRows in PHP that iterates through nested dictionaries (first level called ‘rows’ and second level called ‘properties’):

(more…)

19
10
12
 1 Comment

How to implement WCF service in PHP

Posted by | .NET, C#, PHP | Tagged , |

Today I implemented my first PHP Web Service and successfully used it by C# client or, more precisely, I created WCF service contract in C# and implemented it in PHP.  A new option “singlewsdl” in WCF 4.5  helped me a lot. Using this option I generated the service description as a single WSDL-file without additional XSD-files containing the data contracts of the service. Then I uploaded this WSDL-file on my Web Server and written PHP code for all the methods of the service.

(more…)

14
10
12
 1 Comment

Integrating C# and PHP using XML-RPC and WCF

Posted by | .NET, C#, PHP | Tagged , |

While investigating how to make C# and PHP interact with each other I run into an interesting extension of WCF Service Model for working over XML-RPC protocol. I played a bit with this extension and after fixing some bug in its source code I made it work with my little custom XML-RPC server implemented as Joomla XML-RPC plugin.

(more…)

13
10
12
 1 Comment

How to make PHP Web Service with NuSoap

Posted by | C#, PHP | Tagged , |

While investigating how to create a Web Service in PHP I run into NuSoap library, that can generate WSDL based on some matadata describing Web Service method signatures and the data structures. I downloaded NuSoap library and found some trivial sample that started working after adding the highlighted line of code:

(more…)

30
07
12
 13 Comments

How I configured sendmail for PHP on Ubuntu Server 12.04

Posted by | PHP, Ubuntu | Tagged |

Preventing sendmail from been very slow

The first thing that I did after installing sendmail with

aptitude install sendmail

is I put “gate.localhost” (gate is my server name) to /etc/hosts so it looks like this:

127.0.0.1       localhost.localdomain localhost
127.0.1.1       gate.localhost gate

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

With default /etc/hosts containing only “gate” and “localhost” sendmail hangs up for a while and writes to /var/log/mail.log the following message:

My unqualified host name (gate) unknown; sleeping for retry.

(more…)

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