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<?php class ObjPrueba { var $nombre; var $age; function ObjPrueba($nombre, $age) { $this->nombre = $nombre; $this->age = $age; } /* Ésta es la función de comparación estática: */ static function cmp_obj($a, $b) { $al = int($a->age); $bl = int($b->age); if ($al == $bl) { return 0; } return ($al > $bl) ? +1 : -1; } } $a[] = new ObjPrueba("c", 22); $a[] = new ObjPrueba("b", 15); $a[] = new ObjPrueba("d", 2); usort($a, array("ObjPrueba", "cmp_obj")); foreach ($a as $elemento) { echo $elemento->nombre ." -> ". $elemento->age. "\n"; }
Output for 7.3.32 - 7.3.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function int() in /in/8W8Jq:16 Stack trace: #0 [internal function]: ObjPrueba::cmp_obj(Object(ObjPrueba), Object(ObjPrueba)) #1 /in/8W8Jq(29): usort(Array, Array) #2 {main} thrown in /in/8W8Jq on line 16
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; ObjPrueba has a deprecated constructor in /in/8W8Jq on line 3 Fatal error: Uncaught Error: Call to undefined function int() in /in/8W8Jq:16 Stack trace: #0 [internal function]: ObjPrueba::cmp_obj(Object(ObjPrueba), Object(ObjPrueba)) #1 /in/8W8Jq(29): usort(Array, Array) #2 {main} thrown in /in/8W8Jq on line 16
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Fatal error: Call to undefined function int() in /in/8W8Jq on line 16
Process exited with code 255.
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