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run code in 200+ php & hhvm versions
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<?php echo json_encode([ 'title' => 'Kpi #1', 'description' => 'Kpi description', 'defaultPeriod' => 'Default period', 'unit' => 'Yes', 'weightRatio' => 0, 'actualFormula' => 'x = y+1', 'targetFormula' => 'x = e$', 'growthFormula' => 'e', 'options' => 'none', ]);
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.2.0
{"title":"Kpi #1","description":"Kpi description","defaultPeriod":"Default period","unit":"Yes","weightRatio":0,"actualFormula":"x = y+1","targetFormula":"x = e$","growthFormula":"e","options":"none"}