The latest mobile phone number regular expression: ^ ((17 [0-9] ) | (14 [0-9]) | (13 [0-9]) | (15 [^ 4, \ D]) | (19 [ ^ 4, \ D]) | (18 [0,1,2,5-9])) \ d {8} $
may be empty phone number regular expression: ^ \ s {0} $ | ^ (( 17 [0-9]) | (14 [0-9]) | (13 [0-9]) | (15 [^ 4, \ D]) | (19 [^ 4, \ D]) | (18 [0,1,2,5-9])) \ d { 8} $
Allow for the empty phone number regular expression
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Origin blog.csdn.net/RuanJianXiaoXueTu/article/details/91490062
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