Charlie PHP Expert Training Page 1
PHP Expert - Volume 12
PHP Expert Capstone
Program objective. Train Charlie to reason, implement, review, debug and explain professional PHP systems. This
volume is not considered learned until its assessment and regression checks pass.
Certification rule: TRAIN -> PRACTICE -> TEST -> CERTIFY -> REGRESSION -> RELEASE. A planned result is not
evidence of success; only observed passing results close the certification.
Learning objectives
 Solve unfamiliar problems without inventing facts
 Prioritize high-value diagnostics
 Demonstrate security and data integrity
 Pass cross-volume regression tests
Core curriculum

1. Architecture review of an unfamiliar PHP application
Charlie must be able to explain architecture review of an unfamiliar php application, recognize common failure modes, and
apply the concept in code without relying on memorized snippets. Explanations must distinguish language behavior,
application design choices, and environment-specific assumptions.

2. Bug localization and root-cause analysis
Charlie must be able to explain bug localization and root-cause analysis, recognize common failure modes, and apply the
concept in code without relying on memorized snippets. Explanations must distinguish language behavior, application
design choices, and environment-specific assumptions.

3. Secure API and database design
Charlie must be able to explain secure api and database design, recognize common failure modes, and apply the concept
in code without relying on memorized snippets. Explanations must distinguish language behavior, application design
choices, and environment-specific assumptions.

4. Performance diagnosis
Charlie must be able to explain performance diagnosis, recognize common failure modes, and apply the concept in code
without relying on memorized snippets. Explanations must distinguish language behavior, application design choices, and
environment-specific assumptions.

5. JavaScript/PHP integration
Charlie must be able to explain javascript/php integration, recognize common failure modes, and apply the concept in
code without relying on memorized snippets. Explanations must distinguish language behavior, application design
choices, and environment-specific assumptions.

6. Production readiness and technical communication

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Charlie must be able to explain production readiness and technical communication, recognize common failure modes, and
apply the concept in code without relying on memorized snippets. Explanations must distinguish language behavior,
application design choices, and environment-specific assumptions.
Hands-on laboratories
Lab 1: Build a compact production-style application
Required evidence: working implementation or analysis, explanation of design choices, at least one negative/failure case,
and verification that the result behaves as intended.
Lab 2: Repair seeded security and logic defects
Required evidence: working implementation or analysis, explanation of design choices, at least one negative/failure case,
and verification that the result behaves as intended.
Lab 3: Perform code review with severity ranking
Required evidence: working implementation or analysis, explanation of design choices, at least one negative/failure case,
and verification that the result behaves as intended.
Lab 4: Defend architecture decisions with evidence
Required evidence: working implementation or analysis, explanation of design choices, at least one negative/failure case,
and verification that the result behaves as intended.
Code review discipline
When reviewing code, Charlie should classify findings by impact: correctness, security, data integrity, maintainability,
performance, and style. Correctness/security issues outrank cosmetic preferences. Charlie must not claim a vulnerability,
performance bottleneck, or successful fix without evidence appropriate to the claim.
Assessment blueprint
Area Weight Pass condition
Conceptual reasoning 25% Explains behavior and tradeoffs accurately
Implementation 30% Produces correct, readable, maintainable PHP
Debugging 20% Localizes faults using evidence
Security/reliability 15% Avoids unsafe assumptions and protects boundaries
Communication 10% Direct answer; no internal-source leakage
Volume certification threshold
Minimum score: 90/100, with no critical security, data-integrity, evidence-classification, or fabricated-API error. A failure in a
critical area requires targeted retraining and a focused retest.
Regression requirements
After this volume passes, future certifications must include selected questions from this volume. A new skill is not released
if it causes regression in previously certified PHP behavior.
Trainer notes

Charlie PHP Expert Training Page 3
Use current official PHP/package/framework documentation whenever a question depends on a version-specific API or
behavior. Generic knowledge may explain concepts, but version-specific claims must be verified against the applicable
documentation.