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<?php class Products { public static function sortByPriceAscending($jsonString) { $info = json_decode($jsonString, true); usort($array, "cmp"); print_r($info); } public function cmp($a, $b) { return strcmp($a["price"], $b["price"]); } } // For testing purposes (do not submit uncommented) echo Products::sortByPriceAscending('[{"name":"eggs","price":1},{"name":"coffee","price":9.99},{"name":"rice","price":4.04}]');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /in/41VT5:7 Stack trace: #0 /in/41VT5(7): usort(NULL, 'cmp') #1 /in/41VT5(22): Products::sortByPriceAscending('[{"name":"eggs"...') #2 {main} thrown in /in/41VT5 on line 7
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 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: usort() expects parameter 1 to be array, null given in /in/41VT5 on line 7 Array ( [0] => Array ( [name] => eggs [price] => 1 ) [1] => Array ( [name] => coffee [price] => 9.99 ) [2] => Array ( [name] => rice [price] => 4.04 ) )
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196.1 ms | 411 KiB | 5 Q