您 需要 为cols 指定参数 类型 。请参阅Google Charts
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您的PHP代码应类似于：
function test(){ $array['cols'][] = array('type' => 'string'); $array['cols'][] = array('type' => 'string'); $array['cols'][] = array('type' => 'string'); $array['rows'][] = array('c' => array( array('v'=>'20-01-13'), array('v'=>22)) ); $array['rows'][] = array('c' => array( array('v'=>'21-01-13'), array('v'=>26))); $array['rows'][] = array('c' => array( array('v'=>'22-01-13'), array('v'=>12))); return $array;}print json_enpre(test());您的json代码看起来更像：
{ "cols": [ {"type": "string"}, {"type": "string"}, {"type": "string"} ], "rows": [ {"c":[{"v":"20-01-13"}, {"v":22} ]}, {"c":[{"v":"21-01-13"}, {"v":26} ]}, {"c":[{"v":"22-01-13"}, {"v":12} ]} ]}
