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Training Doctrine ORM - Optimizing Persistence in PHP Symfony

Ref: CRV906
10 people max.
From $4,620 HT / per person
On-site on request · +$540 with certification exam
4 days
Remote

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Equans
EDF
Ubisoft
Microsoft
Aptar
ArcelorMittal
Equans
EDF
Ubisoft
Microsoft
Aptar
ArcelorMittal
Equans
EDF
Ubisoft
Microsoft
Aptar
ArcelorMittal
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Learning objectives

  • Master Doctrine ORM entities and mappings for professional applications
  • Develop complex relationships between entities in a business context
  • Implement optimized DQL queries and custom repositories
  • Configure Doctrine migrations and cache for certified deployments
  • Optimize Doctrine ORM performance in real Symfony projects
  • Design a scalable and maintainable persistent data architecture
A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Don't let this gap widen

Why this program matters

  • Without mastering Doctrine ORM, PHP developers waste 50% of their time on tedious, error-prone manual SQL queries.

  • Teams that neglect advanced mappings generate 3x more persistence bugs, costing an average of 15k€ per major data-refactoring incident.

  • In 2026, 68% of Symfony job postings require certified Doctrine skills, shutting junior profiles out of salaries above 55k€.

  • Every project without high-performance ORM digs a fatal competitive gap, with DB downtimes multiplied by 4 and scalability capped at 10k users per day.

Célian Lebacle
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction

Program

Module 1Doctrine ORM Fundamentals: Entities, Mappings, and Configuration (Symfony Flex, Attributes, Annotations, YAML)

Quick installation of Doctrine ORM via Composer in an intermediate Symfony project, entity definition using PHP 8 attributes, mappings via annotations or YAML for professional flexibility, initial unit tests with PHPUnit integrating the EntityManager, practical exercises on an e-commerce business case with basic repository creation, schema generation via Doctrine console for accelerated and secure startup.

Module 2Doctrine ORM Relationships: Unidirectional and Bidirectional Associations (ManyToOne, OneToMany, ManyToMany)

In-depth exploration of Doctrine ORM relationships with lazy loading and eager fetching to avoid costly N+1 queries, cascade persist/delete configuration in a business context, exercises on a red thread CRM project involving users, orders, and products, use of proxies and persistent collections, resolution of common issues like circular references, production of ER diagrams and association documentation for optimal maintainability.

Module 3Advanced Doctrine ORM Queries: DQL, QueryBuilder, and Custom Repositories (Performance Optimizations)

Mastery of DQL for native-like queries without raw SQL, dynamic QueryBuilder construction with joins, where, and group by for analytical dashboards, creation of custom repositories to encapsulate business logic, integration of pagination and partial hydration for production scaling, practical cases on application logs with full-text search, query profiling via Blackfire to identify and fix bottlenecks, delivery of a performant reporting module.

Module 4Migrations, Cache, and Best Practices for Doctrine ORM: Enterprise Deployment (DoctrineMigrations, Redis)

Generation and execution of Doctrine migrations for schema evolutions without downtime, second-level cache configuration with Redis or APCu accelerating reads by 70%, fixture management for seed data in CI/CD tests, security audit against injections and entity validations, advanced Symfony integration with Events and Listeners, completion of the red thread project with Dockerized deployment, delivery of certified best practices and post-training optimization plan.

Evaluation method

  • Technical MCQ on mappings and DQL at the end of the session
  • Code review evaluation of the red thread Doctrine project
  • Practical quiz on migrations and ORM performance

Learning method

  • Live coding sessions led by an active Symfony/Doctrine expert
  • Hands-on exercises on real e-commerce and CRM projects
  • Evolving red thread project integrating all Doctrine concepts
  • Rich digital materials with Git source code examples

Methods, materials and delivery

The Training Doctrine ORM - Optimizing Persistence in PHP Symfony program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training Doctrine ORM - Optimizing Persistence in PHP Symfony program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training Doctrine ORM - Optimizing Persistence in PHP Symfony program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

FAQ

Frequently asked questions

How much does the Training Doctrine ORM - Optimizing Persistence in PHP Symfony training cost?+
The price is $4,620 (USD) per participant. A detailed quote is sent within one business day.
How long is the Training Doctrine ORM - Optimizing Persistence in PHP Symfony training?+
The training lasts 4 journées, available live online (US time zones) or on-site at your offices.
How is this training paid for?+
Most US teams pay directly through their company (L&D or training budget). We invoice in US dollars and accept bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
Are there any prerequisites?+
Mastery of object-oriented PHP 8+, advanced SQL, and Symfony basics
Is a certificate delivered at the end?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report.
Does Learni provide the equipment?+
No. A computer and stable internet connection are required for the participant. Learni provides the educational platform, the trainer and all course materials.
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