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<?php class ExtendedSPLHeap extends \SPLHeap { protected function compare($a, $b) { if ($a->latitude == $b->latitude) { return 0; } return ($a->latitude < $b->latitude) ? -1 : 1; } } $citiesHeap = new \SplMaxHeap(); $city = new \StdClass; $city->name = "Birmingham"; $city->latitude = 52.4800; $city->longitude = -1.9100; $citiesHeap->insert($city); $city = new \StdClass; $city->name = "Bristol"; $city->latitude = 51.4600; $city->longitude = -2.6000; $citiesHeap->insert($city); echo 'There are ', $citiesHeap->count(), ' cities in the heap', PHP_EOL; echo 'FROM NORTH TO SOUTH', PHP_EOL; $citiesHeap->top(); while ($citiesHeap->valid()) { $city = $citiesHeap->current(); echo sprintf( "%-20s %+3.4f %+3.4f" . PHP_EOL, $city->name, $city->latitude, $city->longitude ); $citiesHeap->next(); } echo $citiesHeap->rewind(); echo 'There are ', $citiesHeap->count(), ' cities in the heap', PHP_EOL;
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Deprecated: Return type of ExtendedSPLHeap::compare($a, $b) should either be compatible with SplHeap::compare(mixed $value1, mixed $value2): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/J4mnl on line 5 There are 2 cities in the heap FROM NORTH TO SOUTH Bristol +51.4600 -2.6000 Birmingham +52.4800 -1.9100 There are 0 cities in the heap
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Deprecated: Return type of ExtendedSPLHeap::compare($a, $b) should either be compatible with SplHeap::compare(mixed $value1, mixed $value2): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/J4mnl on line 5 There are 2 cities in the heap FROM NORTH TO SOUTH Bristol +51.4600 -2.6000 Birmingham +52.4800 -1.9100 There are 0 cities in the heap
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
There are 2 cities in the heap FROM NORTH TO SOUTH Bristol +51.4600 -2.6000 Birmingham +52.4800 -1.9100 There are 0 cities in the heap
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 3 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 15 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 18 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 25 Fatal error: Class 'SPLHeap' not found in /in/J4mnl on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 3 Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/J4mnl on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 3 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/J4mnl on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/J4mnl on line 3 Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/J4mnl on line 5
Process exited with code 255.
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