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iconv_substr
Popis
string iconv_substr ( string str, int offset [, int length [, string charset]] )
Cuts a portion of str
specified by the
offset
and length
parameters.
Seznam parametrů
str
The original string.
offset
If
offset
is non-negative, iconv_substr() cuts the portion out ofstr
beginning atoffset
'th character, counting from zero.If
offset
is negative, iconv_substr() cuts out the portion beginning at the position,offset
characters away from the end ofstr
.length
If
length
is given and is positive, the return value will contain at mostlength
characters of the portion that begins atoffset
(depending on the length ofstring
).If negative
length
is passed, iconv_substr() cuts the portion out ofstr
from theoffset
'th character up to the character that islength
characters away from the end of the string. In caseoffset
is also negative, the start position is calculated beforehand according to the rule explained above.charset
If
charset
parameter is omitted,string
are assumed to be encoded in iconv.internal_encoding.Note that
offset
andlength
parameters are always deemed to represent offsets that are calculated on the basis of the character set determined bycharset
, whilst the counterpart substr() always takes these for byte offsets.
Návratové hodnoty
Returns the portion of str
specified by the
offset
and length
parameters.
If str
is shorter than offset
characters long, FALSE will be returned.
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