Description:
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Using PHP, I never would understand this error message without knowing the opcodes by heart.... Please change the error message.

Test script:
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php -r 'foreach ([[1]] as list($x) => list($y)) print "$x => $y\n";'


Expected result:
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PHP Parse error: Cannot use T_LIST as index in foreach in Command line code on line 1

or something like this?

Actual result:
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PHP Fatal error:  Invalid opcode 38/1/2. in Command line code on line 1