Programming PHP

strcmp
int strcmp(string one, string two)
Compares two strings; returns a number less than 0 if one is less than two, 0 if the two
strings are equal, and a number greater than 0 if one is greater than two. The comparison is
case-sensitive—that is, “Alphabet” and “alphabet” are not considered equal.
strcoll
int strcoll(string one, string two)
Compares two strings using the rules of the current locale; returns a number less than 0 if
one is less than two, 0 if the two strings are equal, and a number greater than 0 if one is
greater than two. The comparison is case-sensitive—that is, “Alphabet” and “alphabet” are
not considered equal.
strcspn
int strcspn(string string, string characters)
Returns the position of the first instance of a character from characters in string.
strftime
string strftime(string format[, int timestamp])
Formats a time and date according to the format string provided in the first parameter and
the current locale. If the second parameter is not specified, the current time and date is
used. The following characters are recognized in the format string:
%a Name of the day of the week as a three-letter abbreviation; e.g., “Mon”
%A Name of the day of the week; e.g., “Monday”
%b Name of the month as a three-letter abbreviation; e.g., “Aug”
%B Name of the month; e.g., “August”
%c Date and time in the preferred format for the current locale
%C The last two digits of the century
%d Day of the month as two digits, including a leading zero if necessary; e.g.,
“01” through “31”
%D Same as %m/%d/%y
%e Day of the month as two digits, including a leading space if necessary; e.g.,
“1” through “31”
%h Same as %b
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