(PECL haru >= 0.0.1)
HaruPage::measureText — Calculate the byte length of characters which can be included on one line of the specified width
$text
, float $width
[, bool $wordwrap = FALSE
] )Get the byte length of characters which can be included on one line of the specified width.
textThe text to measure.
widthThe width of the line.
wordwrap
When this parameter is set to TRUE the function "emulates" word
wrapping by stopping after the last full word (delimited by whitespace)
that can fit on the line.
Returns the byte length of characters which can be included within the specified width. For single-byte encodings, this is equal to the number of characters. For multi-byte encodings, this is not necessarily the case.
发生错误时抛出 HaruException 异常。