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<?php $json = '[{"city":"Berlin"},{"city":"London"},{"city":"New York", {"city":"Vienna"}]'; $array = json_decode($json, true); print_r(array_column($array, 'city', 'city'));
Output for 8.1.23 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /in/oEBL9:5 Stack trace: #0 /in/oEBL9(5): array_column(NULL, 'city', 'city') #1 {main} thrown in /in/oEBL9 on line 5
Process exited with code 255.
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 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: array_column(): Argument #1 ($array) must be of type array, null given in /in/oEBL9:5 Stack trace: #0 /in/oEBL9(5): array_column(NULL, 'city', 'city') #1 {main} thrown in /in/oEBL9 on line 5
Process exited with code 255.
Output for 7.4.24
Warning: array_column() expects parameter 1 to be array, null given in /in/oEBL9 on line 5

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