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webkernel/lifecycle
Supported Checks
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Check expressions describe failure conditions. They are parsed as data and evaluate against the PHP process running Composer.
Grammar
PHP_VERSION_ID <operator> <integer>Whitespace is allowed around the expression and operator. The integer is non-negative decimal digits. Variable names are case-sensitive; only PHP_VERSION_ID is supported.
| Operator | Failure when |
|---|---|
==, === | The version ID equals the integer. |
!=, !== | The version ID differs from the integer. |
< | The version ID is lower. |
<= | The version ID is lower or equal. |
> | The version ID is higher. |
>= | The version ID is higher or equal. |
The equality variants behave the same here because both operands are integers. PHP 8.5.0 has version ID 80500.
Results
| Comparison result | Configured severity | Behavior |
|---|---|---|
| False | Any supported severity. | Reports PASS. |
| True | info | Reports INFO, continues. |
| True | warning | Reports WARN, continues. |
| True | danger | Reports BLOCKED, throws. |
on-fail.message is required. fix is optional text included with a failure and is never executed. Unknown fields, unknown severities, unsupported expressions and missing required values fail declaration validation.
Unsupported forms
Extension checks, &&, ||, parentheses, arbitrary constants, functions, environment variables and general PHP expressions are not part of the current language. Express mandatory extension requirements through Composer's require metadata.
Related guide
See Environment Checks for a full manifest example and built-in execution phases.