3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array("foo" => "bar"); echo "$a[foo]"; echo "\n-----\n"; echo "$a['foo']"; echo "\n-----\n"; echo "{$a[foo]}"; echo "\n-----\n"; echo "{$a['foo']}";
Output for 5.4.0 - 5.4.21
Parse error: syntax error, unexpected '' (T_ENCAPSED_AND_WHITESPACE), expecting identifier (T_STRING) or variable (T_VARIABLE) or number (T_NUM_STRING) in /in/vCuGH on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in /in/vCuGH on line 7
Process exited with code 255.
preferences:
178.59 ms | 1399 KiB | 57 Q