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run code in 300+ PHP versions simultaneously
<?php $a = "hello"; $b = "world"; //echo "{$a $b}\n"; // This causes a Parse error: syntax error, unexpected '$b' (T_VARIABLE), expecting } echo "{{$a} $b}\n"; // but you can escape the sequence -- why is the escape sequence character still a part of the output?
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
{hello world}
preferences:
206.77 ms | 404 KiB | 259 Q