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Home/ Questions/Q 682991
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Editorial Team
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Editorial Team
Asked: May 14, 20262026-05-14T01:39:28+00:00 2026-05-14T01:39:28+00:00

<?php class Lala { const a = a; const b = a . b;

  • 0
<?php
 class Lala {
  const a = "a";
  const b = a . "b";
 }
?>

Parse error: syntax error, unexpected ‘(‘, expecting ‘,’ or ‘;’ on line 4

What’s the problem with it?

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  1. Editorial Team
    Editorial Team
    2026-05-14T01:39:29+00:00Added an answer on May 14, 2026 at 1:39 am

    From the documentation:

    The value must be a constant expression, not (for example) a variable, a property, a result of a mathematical operation, or a function call.

    See http://www.php.net/manual/en/language.oop5.constants.php

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