3v4l.org

run code in 300+ PHP versions simultaneously
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Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
string(1) "a" bool(true) Warning: Undefined array key "010" in /in/SDpff on line 5 NULL bool(false)
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
string(1) "a" bool(true) Notice: Undefined index: 010 in /in/SDpff on line 5 NULL bool(false)
Output for 7.3.32 - 7.3.33, 7.4.26
string(1) "a" bool(true) NULL bool(false)

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