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My function container (PHP):
1.gettype($variable)
return type of variable
2.preg_match($pattern,$string)
return true/ false
3.strpos($all,$neddle)
Return the index of the first match/false
4.cal_days_in_month(201502)
return the total number of days in this month
The above introduces the PHP function container ing..., including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.