Training Doctrine ORM - Optimizing Persistence in PHP Symfony

$4,620

  • 4 days
  • Onsite
  • 10 people max.
Ref: CRV906
10 people max.
$4,620
In-company rate: from $7,865 for the whole team
On-site and certification exam on quote
4 days
Onsite

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, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

41,306 programs · 25 countries

  • Aptar
  • ArcelorMittal
  • Equans
  • EDF
  • Ubisoft
  • Microsoft
  • Atos

Every program built with a dedicated engineer

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Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft, Microsoft and Atos.

Doctrine ORM training 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

Program

Doctrine ORM curriculum: 4 modules over 4 days

Module 1 : Doctrine 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 2 : Doctrine 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 3 : Advanced 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 4 : Migrations, 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.

How Doctrine ORM skills are assessed

  • 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

How the Doctrine ORM course is taught

  • 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

Doctrine ORM training: access and practical arrangements

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.

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.

Our method

How Learni guarantees the quality of your Doctrine ORM training

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.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

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
Enroll and offer a kit
FAQ

Doctrine ORM: frequently asked questions

Which tools are used in Doctrine ORM training?+
Hands-on work runs on symfony Flex, attributes, annotations, YAML, manyToOne and oneToMany. Those tools come from the Doctrine ORM program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.
What can participants do after Doctrine ORM training?+
They can master Doctrine ORM entities and mappings for professional applications, develop complex relationships between entities in a business context and implement optimized DQL queries and custom repositories. Those are the stated objectives of the Doctrine ORM program at Intermediate level, checked by the end-of-session assessment.
What does the Doctrine ORM program cover, day by day?+
Day 1: Doctrine ORM Fundamentals: Entities, Mappings, and Configuration (Symfony Flex, Attributes, Annotations, YAML). Day 2: Doctrine ORM Relationships: Unidirectional and Bidirectional Associations (ManyToOne, OneToMany, ManyToMany). Day 3: Advanced Doctrine ORM Queries: DQL, QueryBuilder, and Custom Repositories (Performance Optimizations). Day 4: Migrations, Cache, and Best Practices for Doctrine ORM: Enterprise Deployment (DoctrineMigrations, Redis). The Doctrine ORM program runs over 4 days, delivered on site.
How is Doctrine ORM training assessed?+
Assessment relies on technical MCQ on mappings and DQL at the end of the session, code review evaluation of the red thread Doctrine project and practical quiz on migrations and ORM performance. Learni issues a completion certificate together with the individual assessment report at the end of the Doctrine ORM program, which an L&D team can file as evidence.
How much does Doctrine ORM training cost per participant?+
Doctrine ORM training costs $4,620 per participant. For an in-company team, the flat rate starts at $7,865 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Doctrine ORM training take?+
4 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Doctrine ORM training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Doctrine ORM training?+
Mastery of object-oriented PHP 8+, advanced SQL, and Symfony basics.
Is a certificate issued after Doctrine ORM training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for Doctrine ORM training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
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