3v4l.org

run code in 300+ PHP versions simultaneously
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Output for 8.2.0 - 8.2.27, 8.3.0 - 8.3.18, 8.4.1 - 8.4.5
Deprecated: http_build_query(): Passing null to parameter #2 ($numeric_prefix) of type string is deprecated in /in/ku2oK on line 3 foo%5B0%5D=a&foo%5B1%5D=b&foo%5B2%5D=c foo0=a&foo1=n
Output for 8.1.0 - 8.1.31
Deprecated: http_build_query(): Passing null to parameter #2 ($numeric_prefix) of type string is deprecated in /in/ku2oK on line 6 foo%5B0%5D=a&foo%5B1%5D=b&foo%5B2%5D=c foo0=a&foo1=n
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
foo%5B0%5D=a&foo%5B1%5D=b&foo%5B2%5D=c foo0=a&foo1=n
preferences:
151.96 ms | 413 KiB | 5 Q