Configuring php.ini for Development

A development php.ini can show detailed diagnostics to local developers.

What It Does

A development php.ini can show detailed diagnostics to local developers. The following examples distinguish a normal use case, a boundary case and a practical application.

Requirements and Compatibility

Access to the correct active php.ini and relevant PHP SAPI; compare CLI settings against PHP-FPM before deploying.

Loaded configuration files vary between the command-line interface, FPM and Apache handlers; verify the runtime actually serving requests.

The code focuses on the core concept. Production implementation may also need routes, validation, persistence, authorization or deployment tooling.

Example 1: Basic Behavior

Production-oriented PHP INI settings. Choose limits appropriate to real workloads.

display_errors = Off
log_errors = On
memory_limit = 256M
max_execution_time = 30

This is a PHP INI configuration example; use it in its appropriate file or shell, not in the PHP source editor.

Example 2: Another Case

Use development-only configuration for clear errors; do not expose these settings publicly.

display_errors = On
error_reporting = E_ALL
log_errors = On

This is a PHP INI configuration example; use it in its appropriate file or shell, not in the PHP source editor.

Practical Example: Putting It to Use

Development can show errors locally, but public production responses must not expose them.

<?php
$flags = ['display_errors' => '1', 'error_reporting' => 'E_ALL', 'log_errors' => '1'];
foreach ($flags as $name => $value) echo $name . '=' . $value . '; ';
// Enable display_errors only in an isolated development environment.

Important Behavior and Edge Cases

Never deploy display_errors=On to a public site; test configuration changes per SAPI.

Comparison with Related Functions or Approaches

Common Beginner Mistakes

Key Takeaways

• A development php.ini can show detailed diagnostics to local developers.
• Never deploy display_errors=On to a public site; test configuration changes per SAPI.
• Use production logging with restricted access and errors hidden from clients.

Before adapting these examples, verify the return values, test the failure paths and confirm that your application meets its security and environment requirements.