PHP Manual
HaruFont
Calculate the number of characters which can be included within the specified width

HaruFont::measureText

(PECL haru >= 0.0.1)

HaruFont::measureText — Calculate the number of characters which can be included within the specified width

说明

HaruFont::measureText ( string $text , float $width , float $font_size , float $char_space , float $word_space [, bool $word_wrap = FALSE ] ) : int

Calculate the number of characters which can be included within the specified width.

参数

text: The text to fit the width.
width: The width of the area to put the text to.
font_size: The size of the font.
char_space: The character spacing.
word_space: The word spacing.
word_wrap: When this parameter is set to TRUE the function "emulates" word wrapping and doesn't include the part of the current word if reached the end of the area.

返回值

Returns the number of characters which can be included within the specified width.

错误／异常

发生错误时抛出 HaruException 异常。

php directoryiterator determine if current directoryiterator item can be written to php vector returns a representation that can be converted to json php eventbuffer moves the specified number of bytes from a source buffer to the end of the current buffer php mcve 函数 returns array of strings which represents the keys that can be used for response parameters on this transaction php snmp 函数 return all objects including their respective object id within the specified one php tidy 函数 returns the number of tidy accessibility warnings encountered for specified document php harufont get the total width of the text number of characters number of words and number of spaces php harufont calculate the number of characters which can be included within the specified width php harupage calculate the byte length of characters which can be included on one line of the specified width php mongodb bson dbpointer returns a representation that can be converted to json php mongodb bson minkey returns a representation that can be converted to json php phar returns true if the phar archive can be modified php recursiveiterator returns if an iterator can be created for the current entry php soapserver sets the object which will be used to handle soap requests php solrquery returns the number of characters of fragments to consider for highlighting php solrquery returns the maximum number of query terms that will be included in any generated query php solrquery sets the factor by which the regex fragmenter can stray from the ideal fragment size php swftextfield adds characters to a font that will be available within a textfield php swoole mmap map a file into memory and return the stream resource which can be used by php stream operations.php zookeeper checks if the current zookeeper connection state can be recovered