3v4l.org

run code in 500+ PHP versions simultaneously
<?php // does not trigger deprecation warning function foo(int $param_optional = null, int $param_required) {} // triggers deprecation warning function bar(int $param_optional = 1, int $param_required) {}
Output for 7.4.0 - 7.4.33
Output for 8.0.1 - 8.0.30
Deprecated: Required parameter $param_required follows optional parameter $param_optional in /in/biVG1 on line 7
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35
Deprecated: Optional parameter $param_optional declared before required parameter $param_required is implicitly treated as a required parameter in /in/biVG1 on line 7
Output for 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
Deprecated: foo(): Implicitly marking parameter $param_optional as nullable is deprecated, the explicit nullable type must be used instead in /in/biVG1 on line 4 Deprecated: bar(): Optional parameter $param_optional declared before required parameter $param_required is implicitly treated as a required parameter in /in/biVG1 on line 7
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