Programming PHP

strtr
string strtr(string string, string from, string to)
Returns a string created by translating in string every occurrence of a character in from to
the character in to with the same position.
strval
string strval(mixed value)
Returns the string equivalent for value. Ifvalue is a nonscalar value (object or array), the
function returns an empty string.
substr
string substr(string string, int offset[, int length])
Returns the substring of string. Ifoffset is positive, the substring starts at that character; if
it is negative, the substring starts at the character offset characters from the string’s end. If
length is given and is positive, that many characters from the start of the substring are
returned. If length is given and is negative, the substring ends length characters from the
end of string. Iflength is not given, the substring contains all characters to the end of
string.
substr_count
int substr_count(string string, string search)
Returns the number of times search appears in string.
substr_replace
string substr_replace(string string, string replace, string offset[, int length])
Replaces a substring in string with replace. The substring replaced is selected using the
same rules as those of substr( ).
symlink
int symlink(string path, string new)
Creates a symbolic link to path at the path new. Returns true if the link was successfully
created and false if not.
450 | Appendix A: Function Reference
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