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<?php $a = array(); $a[-5] = "-5"; $a[] = "after -5"; $b = array( -5 => "-5" ); $b[] = "after -5"; var_dump($a, $b);
Output for 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
array(2) { [-5]=> string(2) "-5" [-4]=> string(8) "after -5" } array(2) { [-5]=> string(2) "-5" [-4]=> string(8) "after -5" }
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29
array(2) { [-5]=> string(2) "-5" [0]=> string(8) "after -5" } array(2) { [-5]=> string(2) "-5" [-4]=> string(8) "after -5" }

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