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<?php function stringAppend($str) { $str = $str."append"; //không có return } function stringPrepend($str) { $str = "prepend".$str; } $aString = "PHP"; echo stringPrepend(stringAppend($aString));// Không có return function updateValue(&$number) { $number = $number +1; } $val = 9; echo updateValue(&$val);
Output for 7.1.0 - 7.1.16, 7.2.0 - 7.2.4
Parse error: syntax error, unexpected '&' in /in/7bUJm on line 24
Process exited with code 255.
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243.56 ms | 1395 KiB | 29 Q