@ 2013-10-08T04:17:36Z <?php
$a = 'foo bar baz';
$b = 'a';
var_dump( $$b[0] );
${$b}[0] = '';
var_dump( $$b[0] );
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Output for 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 string(1) "f"
Fatal error: Uncaught Error: Cannot assign an empty string to a string offset in /in/XhWnm:5
Stack trace:
#0 {main}
thrown in /in/XhWnm on line 5
Process exited with code 255 . Output for 7.1.0 - 7.1.20 , 7.2.0 - 7.2.33 , 7.3.12 - 7.3.33 , 7.4.0 - 7.4.33 string(1) "f"
Warning: Cannot assign an empty string to a string offset in /in/XhWnm on line 5
string(1) "f"
Output for 7.0.0 - 7.0.20 string(1) "f"
string(1) " "
Output for 4.3.0 - 4.3.11 , 4.4.0 - 4.4.9 , 5.0.0 - 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.28 string(11) "foo bar baz"
string(11) " oo bar baz"
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239.09 ms | 403 KiB | 356 Q