Sharing Debugger - Facebook for Developers

Since April 11th 2016, facebook cannot get og:image metatag of our articles.
This is workaround to get facebook scraped og:image metatag.

Go to: https://developers.facebook.com/tools/debug/sharing/

Paste URL to debug, then click Debug button

Facebook: Sharing Debugger

Scroll to end of page, click Scrape via API

Sharing Debugger - Scrape via API

In Graph API Explorer screen, click Submit button

Facebook Graph API Explorer

Demistify Buffer Overflow Vulnerability

Collection of articles, blog posts, lectures, tutorials... about Buffer Overflow Vulnerability.

Check and install php7.0-mbstring extention on Ubuntu 16.04 and Microsoft Windows

While learning Facebook SDK for PHP I overlooked one of system requirements preventing my code from running on my host. That is The mbstring extension. Facebook SDK for PHP's system requirements Check if mbstring is enabled root@ubuntu001:~# php -a Interactive mode enabled php > echo extension_loaded('mbstring'); php >exit root@ubuntu001:~# apt-cache search php7 | grep mbstring php7.0-mbstring - MBSTRING module for PHP root@ubuntu001:~# Install php7.0-mbstring root@ubuntu001:~# apt-get install php7.0-mbstring Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: fontconfig-config fonts-dejavu-core libfontconfig1 libgd3 libjbig0 libjpeg-turbo8 libjpeg8 libmcrypt4 libtiff5 libvpx3 libxpm4 Use 'apt autoremove' to remove them. The following additional packages will be installed: libapache2-mod-php7.0 php7.0-cli ph...

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