晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<?php
class MFN_Validation_color extends MFN_Options{
/**
* Constructor
*/
function __construct( $field, $value, $current ){
$this->field = $field;
$this->field['msg'] = isset( $this->field['msg'] ) ? $this->field['msg'] : __( 'This field must be a valid color value.', 'mfn-opts' );
// set value + sanitize
$this->value = str_replace( ' ', '', $value );
$this->current = $current;
$this->validate();
}
/**
* Validate
*/
function validate(){
// single color
if( ! is_array( $this->value ) ){
// allowed values: #f2f2f2, #fff, rgba(0,0,0,0.5), rgba(0,0,0,.5)
// regex101.com/r/A2IjNO/19
$pattern = '/^(\#[\da-f]{3}|\#[\da-f]{6}|rgba\(((\d{1,2}|1\d\d|2([0-4]\d|5[0-5]))\s*,\s*){2}((\d{1,2}|1\d\d|2([0-4]\d|5[0-5]))\s*)(,\s*((0)*\.\d+|0|1))\)|rgb\(((\d{1,2}|1\d\d|2([0-4]\d|5[0-5]))\s*,\s*){2}((\d{1,2}|1\d\d|2([0-4]\d|5[0-5]))\s*)\))$/i';
if( ! preg_match( $pattern, $this->value ) ){
$this->value = ( isset( $this->current ) ) ? $this->current : '';
$this->error = $this->field;
return false;
}
}
}
}