3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 'test' => 'Hello, ', 'foo' => 'world!' ); echo "$arr['test']$arr[foo]";
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected '' (T_ENCAPSED_AND_WHITESPACE), expecting identifier (T_STRING) or variable (T_VARIABLE) or number (T_NUM_STRING) in /in/RMP1O on line 8
Process exited with code 255.
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 T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in /in/RMP1O on line 8
Process exited with code 255.
Output for 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in /in/RMP1O on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `T_NUM_STRING' in /in/RMP1O on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Notice: Undefined index: 'test' in /in/RMP1O on line 8 world!
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