3v4l.org

run code in 300+ PHP versions simultaneously
<?php // https://bugs.php.net/bug.php?id=71927 define('great','my'); $great=[1 => 'fantastic']; $my='my value'; echo "This is ${great[1] }\n"; echo "This is ${ great[1]}\n"; echo "This is ${ great[1] }\n"; echo "This is ${great[1]}\n";
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/YPXkr on line 8 Deprecated: Using ${expr} (variable variables) in strings is deprecated, use {${expr}} instead in /in/YPXkr on line 9 Deprecated: Using ${expr} (variable variables) in strings is deprecated, use {${expr}} instead in /in/YPXkr on line 10 Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /in/YPXkr on line 11 This is fantastic Warning: Undefined variable $y in /in/YPXkr on line 9 This is Warning: Undefined variable $y in /in/YPXkr on line 10 This is This is fantastic
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
This is fantastic Warning: Undefined variable $y in /in/YPXkr on line 9 This is Warning: Undefined variable $y in /in/YPXkr on line 10 This is This is fantastic
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 - 7.4.33
This is fantastic Notice: Undefined variable: y in /in/YPXkr on line 9 This is Notice: Undefined variable: y in /in/YPXkr on line 10 This is This is fantastic
Output for 7.3.32 - 7.3.33
This is fantastic This is This is This is fantastic
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '[' in /in/YPXkr on line 9
Process exited with code 255.
preferences:
234.24 ms | 401 KiB | 330 Q