presentations/deepdive-phpday19.xml at master · php/presentations · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<presentation css="derick.css">
<topic>PHP</topic>
<title>PHP Deep Dive</title>
<event>phpDay 2019</event>
<location>Verona, Italy</location>
<date>May 11th, 2019</date>
<speaker>Derick Rethans</speaker>
<email>derick@php.net</email>
<twitter>derickr</twitter>
<url>https://derickrethans.nl/talks/deepdive-phpday19</url>
<joindin></joindin>

<slide>slides/xdebug/title.xml</slide>
<slide>slides/mongodb/me.xml</slide>

<slide>slides/internals/title-agenda.xml</slide>

<slide>slides/internals/title-stages.xml</slide>
<!-- INTRODUCTION
Compile stages:
Parse script
Create AST
Convert to opcodes
Run the code
Opcache for caching
-->
<slide>slides/internals/stages.xml</slide>

<!-- STAGES
Parse
- Show parser rules
- Show "compiler" rules
-->

<slide>slides/internals/title-parsing.xml</slide>
<slide>slides/internals/parse-state-machine.xml</slide>
<slide>slides/internals/parse-tokenization.xml</slide>
<slide>slides/internals/scanner.xml</slide>
<slide>slides/internals/scanner-rules.xml</slide>

<!-- EXERCISE: SHORT OPEN TAG -->
<slide>slides/internals/exercise-short-open-tag.xml</slide>

<slide>slides/internals/ast.xml</slide>
<slide>slides/internals/ast1.xml</slide>
<slide>slides/internals/scanner-ast.xml</slide>
<slide>slides/internals/scanner-ast2.xml</slide>
<slide>slides/internals/bytecode0.xml</slide>
<slide>slides/internals/bytecode½.xml</slide>
<slide>slides/internals/bytecode1.xml</slide>

<!-- EXERCISE: ALWAYS STRICT -->
<slide>slides/internals/exercise-strict-by-default.xml</slide>

<slide>slides/internals/jumps.xml</slide>

<!--
AST
- Show AST for various control structures

Opcodes
- Show AST for the same control structures
-->

<slide>slides/internals/jumps-if.xml</slide>
<slide>slides/internals/jumps-if-else.xml</slide>

<slide>slides/internals/rings.xml</slide>
<slide>slides/internals/jumps-for.xml</slide>
<slide>slides/internals/jumps-for-rewritten.xml</slide>
<slide>slides/internals/jumps-while.xml</slide>
<slide>slides/internals/jumps-do-while.xml</slide>
<slide>slides/internals/jumps-foreach.xml</slide>
<slide>slides/internals/jumps-complex.xml</slide>
<slide>slides/internals/loops.xml</slide>
<slide>slides/internals/jumps-complex-dot.xml</slide>

<!--
Try/Catch nonsense
- FASTCALL/FASTRET
-->
<slide>slides/internals/catch.xml</slide>
<slide>slides/internals/jumps-try-catch.xml</slide>

<!--
Dead code analysis
- Show how Xdebug does it through VLD
-->
<slide>slides/internals/deadcode.xml</slide>
<slide>slides/internals/deadcode-vld.xml</slide>

<!--
Path analysis
- Branch and Path
-->
<slide>slides/internals/branches.xml</slide>
<slide>slides/xdebug/vld-path-2-paths.xml</slide>
<slide>slides/xdebug/vld-path-4-code.xml</slide>
<slide>slides/xdebug/vld-path-4-output.xml</slide>

<slide>slides/xdebug/vld-path-3-code.xml</slide>
<slide>slides/xdebug/vld-path-3-output.xml</slide>
<slide>slides/xdebug/vld-path-3-paths.xml</slide>

<!-- Conclusion

Code -> Tokens -> AST -> opode

Transformation of control structures

Useful implementations

-->
<slide>slides/internals/recap.xml</slide>
<slide>slides/internals/recap-content.xml</slide>


<slide>slides/mongodb/questions.xml</slide>
<slide>slides/xdebug/phpinternalsnews.xml</slide>

<slide>slides/mongodb/resources.xml</slide>

</presentation>