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       Echo"";Echo date ("Y-m-d", strtotime ("now"), "\ n ";Echo"";Echo date ("Y-m-d", strtotime ("-1 week Monday"), "\ n ";Echo"";Echo date ("Y-m-d", strtotime ("-1 week Sunday"), "\ n ";Echo"";Echo date ("Y-m-d", strtotime ("+ 0 week Monday"), "\ n ";Echo"";Echo date ("Y-m-d", strtotime ("+ 0 week Sunday"), "\ n ";Echo""; Echo "********** months :";Echo date ('N ');Echo"";Echo "********** week :";Echo date ("w ");Echo"";Echo "********** number of days this month :";Echo date ("t "); Echo""; Echo'Last week:
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Echo date ("Y-m-d H: I: s", mktime (0, 0, 0, date ("m"), date ("d ") -date ("w") + 1-7, date ("Y"), "\ n ";Echo date ("Y-m-d H: I: s", mktime (23, 59, 59, date ("m"), date ("d ") -date ("w") + 7-7, date ("Y"), "\ n ";Echo"";Echo'This week:
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Echo date ("Y-m-d H: I: s", mktime (0, 0, 0, date ("m"), date ("d ") -date ("w") + 1, date ("Y"), "\ n ";Echo date ("Y-m-d H: I: s", mktime (23, 59, 59, date ("m"), date ("d ") -date ("w") + 7, date ("Y"), "\ n ";Echo"";Echo'Last month:
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Echo date ("Y-m-d H: I: s", mktime (0, 0, 0, date ("m")-2, 1, date ("Y"), "\ n ";Echo date ("Y-m-d H: I: s", mktime (, 59, date ("m")-, date ("Y "))), "\ n ";Echo""; Echo'Last month:
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Echo date ("Y-m-d H: I: s", mktime (0, 0, 0, date ("m")-1,1, date ("Y"), "\ n ";Echo date ("Y-m-d H: I: s", mktime (23, 59, 59, date ("m"), 0, date ("Y "))), "\ n ";Echo"";Echo'This month:
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Echo date ("Y-m-d H: I: s", mktime (0, 0, 0, date ("m"), 1, date ("Y"), "\ n ";Echo date ("Y-m-d H: I: s", mktime (23, 59, 59, date ("m"), date ("t "), date ("Y"), "\ n ";Echo"";  Echo"";$ Season = ceil (date ('N')/3)-2; // the last quarter is the quarterEcho'Last quarter:
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Echo date ('Y-m-d H: I: S', mktime (0, 0, 0, $ season * 3-3 + 1,1, date ('Y'), "\ n ";Echo date ('Y-m-d H: I: S', mktime (, 59, $ season * 3, date ('t', mktime (0, 0, 0, $ season * 3, 1, date ("Y"), date ('Y'), "\ n ";Echo"";  Echo"";$ Season = ceil (date ('N')/3)-1; // the first quarter of the last quarterEcho'Last quarter:
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Echo date ('Y-m-d H: I: S', mktime (0, 0, 0, $ season * 3-3 + 1,1, date ('Y'), "\ n ";Echo date ('Y-m-d H: I: S', mktime (, 59, $ season * 3, date ('t', mktime (0, 0, 0, $ season * 3, 1, date ("Y"), date ('Y'), "\ n ";Echo""; Echo $ season = ceil (date ('N')/3); // The quarter of the monthEcho'This quarter:
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Echo date ('Y-m-d H: I: S', mktime (0, 0, 0, $ season * 3-3 + 1,1, date ('Y'), "\ n ";Echo date ('Y-m-d H: I: S', mktime (, 59, $ season * 3, date ('t', mktime (0, 0, 0, $ season * 3, 1, date ("Y"), date ('Y'), "\ n ";  $ Season = ceil (date ('N')/3) + 1; // The quarter of the monthEcho'Next quarter:
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Echo date ('Y-m-d H: I: S', mktime (0, 0, 0, $ season * 3-3 + 1,1, date ('Y'), "\ n ";Echo date ('Y-m-d H: I: S', mktime (, 59, $ season * 3, date ('t', mktime (0, 0, 0, $ season * 3, 1, date ("Y"), date ('Y'), "\ n ";  Echo""; ?> 
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