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run code in 300+ PHP versions simultaneously
<?php $a = [1,2,3,4,5, "foo" => "bar"]; $a5 = 2233; $b = "foo"; $x = "a"; echo "${'a'}[$b]";
Output for 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Deprecated: Using ${expr} (variable variables) in strings is deprecated, use {${expr}} instead in /in/8DEtm on line 6 Warning: Array to string conversion in /in/8DEtm on line 6 Array[foo]
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27
Warning: Array to string conversion in /in/8DEtm on line 6 Array[foo]
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.5 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Array to string conversion in /in/8DEtm on line 6 Array[foo]
Output for 7.3.32 - 7.3.33
Array[foo]
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/8DEtm on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/8DEtm on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/8DEtm on line 2
Process exited with code 255.

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