TrueNorth PHP, Toronto [November 4, 2016]

• Business Logic Security (PDF) (44 Slides)
• Deep Dive into Browser Performance (PDF) (33 Slides)

Madison PHP, Wisconsin [November 6, 2015]

• Security Nuts & Bolts (PDF) (65 Slides)

TrueNorth PHP, Toronto [November 6, 2015]

• OWASP Top 10 (PDF) (28 Slides)

IPC Munich [October 26-27, 2015]

• Business Logic Security (PDF) (42 Slides)
• Nginx Tricks for PHP Developers (PDF) (69 Slides)

Bulgaria PHP [September 26, 2015]

• Business Logic Security (PDF) (42 Slides)

Nomad PHP [September 18, 2015]

• OWASP Top 10 (PDF) (29 Slides)

Dutch PHP Conference, Netherlands [June 26, 2015]

• Deep Dive into Browser Performance (PDF) (33 Slides)

IPC Berlin [June 10, 2015]

• Deep Dive into Browser Performance (PDF) (33 Slides)
• Profiling with XHProf (PDF) (36 Slides)

PHP[TEK] [May 20, 2015]

• Business Logic Security (PDF) (42 Slides)

DC4D [April 10, 2015]

• Profiling with XHProf (PDF) (35 Slides)

Confoo, Montreal [February 18 - 19, 2015]

• Profiling with XHProf (PDF) (34 Slides)
• Deep Dive into Browser Performance (PDF) (33 Slides)

ZendCon, Santa Clara [October 28-29 2014]

• Deep Dive into Browser Performance (PDF) (31 Slides)
• Profiling with XHProf (PDF) (33 Slides)

IPC, Berlin [June 2, 2014]

• Business Logic Security (PDF) (42 Slides)
• Bottleneck Analysis (PDF) (59 Slides)

Confoo, Montreal [February 26 - 28, 2014]

• Application Security (PDF) (42 Slides)
• Introduction to PHP Excel (PDF) (39 Slides)

SunshinePHP, Miami [February 7, 2014]

• Application Security (PDF) (42 Slides)

ZendCon, Santa Clara [October 9, 2013]

• Introduction to PostgreSQL (PDF) (48 Slides)
• Application Security (PDF) (40 Slides)

Confoo, Montreal [February 27-28, 2013]

• Introduction to PHP 5.4.(12) (PDF) (41 Slides)
• Bottleneck Analysis (PDF) (60 Slides)

PHP UK, London [February 22, 2013]

• Bottleneck Analysis (PDF) (60 Slides)

PHP Benelux, Antwerp [January 25-26, 2013]

• Introduction to PHP 5.4.(11) (PDF) (43 Slides)
• Application Security (PDF) (40 Slides)

PHP True North, Toronto [November 2-3, 2012]

• Caching with Memcached (PDF) (33 Slides)
• Bottleneck Analysis (PDF) (60 Slides)

ZendCon, Santa Clara [October 23-25, 2012]

• Introduction to PHP 5.4.(8) (PDF) (40 Slides)
• PHP Excel Extension (PDF) (29 Slides)
• Bottleneck Analysis (PDF) (59 Slides)

IPC, Mainz [October 16, 2012]

• Introduction to PHP 5.4.(7) (PDF) (39 Slides)
• Under the Hood (PDF) (34 Slides)

Guelph PHP, Guelph [September 26, 2012]

• Introduction to PHP 5.4.(7) (PDF) (39 Slides)

Northeast PHP, Boston [August 11-12, 2012]

• Introduction to PHP 5.4 (PDF) (39 Slides)
• Caching with Memcached (PDF) (28 Slides)

PHP-Gta, Toronto [June 6, 2012]

• Hidden Features of PHP (PDF) (44 Slides)

Confoo, Montreal [February 29 - March 1, 2012]

• Introduction to PostgreSQL (PDF) (48 Slides)
• Introduction to PHP 5.4 (PDF) (42 Slides)

ZendCon, Santa Clara [October 18, 2011]

• Under the Hood (PDF) (34 Slides)
• Optimization Tricks & Common Mistakes (PDF) (31 Slides)

Berlin, Germany [May 31 - July 1, 2011]

• Memcached, the Better Memcache Interface (PDF) (33 Slides)
• Hidden Features of PHP (PDF) (45 Slides)

ConFoo, Montreal [March 09 - 11, 2011]

• APC & Memcached the High Performance Duo (PDF) (29 Slides)
• Hidden Features of PHP (PDF) (30 Slides)

Forum PHP, Paris [November 10, 2010]

• APC & Memcached the High Performance Duo (PDF) (27 Slides)

ZendCon, Santa Clara [November 2-3, 2010]

• Memcached, the Better Memcache Interface (PDF) (27 Slides)
• Hidden Features of PHP (PDF) (26 Slides)

PHP Barcelona, Barcelona [October 29-30, 2010]

• Hidden Features of PHP (PDF) (26 Slides)
• APC & Memcached the High Performance Duo (PDF) (32 Slides)

Dutch PHP Conference, Amsterdam [June 11-12, 2010]

• Common Optimization Mistakes (PDF) (36 Slides)
• APC & Memcached the High Performance Duo (PDF) (34 Slides)

DevConf, Russia [May 17, 2010]

• Common Optimization Mistakes (PDF) (36 Slides)

ConFoo, Canada [March 10, 2010]

• PHP 5.3 == Awesome! (PDF) (36 Slides)

ZendCon, USA [October 20-21, 2009]

• PHP 5.3 == Awesome! (PDF) (36 Slides)
• Common Optimization Mistakes (PDF) (34 Slides)
• APC & Memcache the High Performance Duo (PDF) (29 Slides)

PHP Quebec, Canada [March 05, 2009]

• Common Optimization Mistakes (PDF) (34 Slides)

PHP Quebec, Canada [March 13, 2008]

• Introduction to PHP 5.3 (PDF) (29 Slides)

ZendCon, USA [october 09, 2007]

• State of PHP Security (PDF) (23 Slides)

Chicago, USA [May 15-17, 2007]

• (PDF) PHP & Performance (106 Slides)
• Securing PHP Applications (PDF) (77 Slides)
• PHP Security Pitfalls (PDF) (34 Slides)

Montreal, Canada [March 13-16, 2007]

• Securing PHP Applications (PDF) (74 Slides)
• (PDF) Migrating to PHP 5.2.1 (40 Slides)

Vancouver, Canada [February 12-13, 2007]

• (PDF) Cache for Ca$h (36 Slides)
• (PDF) Migrating to PHP 5.2.1 (33 Slides)

San Jose, US [October 30-November 1, 2006]

• (PDF) PHP & Performance (73 Slides)
• (PDF) PHP Security (35 Slides)
• (PDF) Caching Systems (36 Slides)

Toronto, Canada [September 13, 2006]

• (PDF) Migrating to PHP 5.2 (33 Slides)
• (SWF) Migrating to PHP 5.2 (33 Slides)
• (PDF) Cache for Ca$h (35 Slides)
• (SWF) Cache for Ca$h (35 Slides)

Skien, Norway [June 23, 2006]

• (PDF) High performance PHP (45 Slides)

New York, New York [June 15, 2006]

• (PDF) Introduction to PDO (37 Slides)

Florida, Orlando [April 25-26, 2006]

• (PDF) Introduction to PDO (37 Slides)
• (PDF) Auditing and Securing PHP Applications (68 Slides)

Montreal, Canada [March 29-31, 2006]

• (PDF) Introduction to PDO (41 Slides)
• (PowerPoint) Introduction to PDO (41 Slides)
• (PDF) PHP Security (66 Slides)
• (PowerPoint) PHP Security (66 Slides)

Frankfurt, Germany [November 08-09, 2005]

• (PDF) PHP & Peformance (50 Slides)
• (PowerPoint) PHP & Peformance (50 Slides)
• (PDF) PHP 5 OOP (59 Slides)
• (PowerPoint) PHP 5 OOP (59 Slides)
• (PDF) PHP Security (45 Slides)
• (PowerPoint) PHP Security (45 Slides)

Toronto, Canada [September 14-16, 2005]

• (PDF) Advanced PHP Security (47 Slides)
• (PowerPoint) Advanced PHP Security (47 Slides)
• (PDF) Managing PHP Performance (47 Slides)
• (PowerPoint) Managing PHP Performance (47 Slides)
• (PDF) PHP Web Services (47 Slides)
• (PowerPoint) PHP Web Services (47 Slides)

Portland, Oregon [August 3rd, 2005]

• (PDF) Accelerating PHP Applications (19 Slides)
• (PowerPoint) Accelerating PHP Applications (19 Slides)

Cancun, Mexico [May 12 - 14, 2005]

• Starting PHP (91 Slides)
• (PDF) Accelerating PHP Applications (45 Slides)
• (PowerPoint) Accelerating PHP Applications (45 Slides)
• (Flash) Accelerating PHP Applications (45 Slides)

Montreal, Canada [Mar 31 - Apr 1, 2005]

• PHP 5 and WebServices (40 Slides)

Vancounver, Canada [Jan 14, 2005]

• PHP 5 and XML (55 Slides)

Toronto, Canada [Sep 22-23, 2004]

• Introduction to PHP 5 (44 Slides)
• PHP 5 and XML (51 Slides)

Amsterdam, Netherland [May 3-5, 2004]

• SQlite Overview (43 Slides)
• Accelerating PHP Applications (43 Slides)

Montreal, Quebec [Mar 26-27, 2004]

• Introduction to SQLite (44 Slides)

PHP|Cruise [Mar 1-4, 2004]

• Introduction to SQLite (56 Slides)
• Debugging Techniques (51 Slides)
• Web Services Programming (54 Slides)

Vancouver, Canada [Jan 22-23, 2004]

• Introduction to SQLite (31 Slides)
• Performance Tuning PHP (52 Slides)