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 pair returns a representation that can be converted to json php eventbuffer copies out specified number of bytes from the front of the buffer php eventbuffer removes specified number of bytes from the front of the buffer without copying it anywhere php mcve 函数 returns array of strings which represents the keys that can be used for response parameters on this transaction php tidy 函数 returns the number of tidy configuration errors encountered for specified document php tidy 函数 returns the number of tidy errors 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 get the width of the character in the font 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 mongogridfsfile returns a resource that can be used to read the stored file php solrquery returns the maximum number of constraint counts that should be returned for the facet fields php solrquery returns the maximum number of characters of the field to return php solrquery returns the maximum number of characters into a document to look for suitable snippets php solrquery returns the maximum number of query terms that will be included in any generated query php solrquery returns the maximum word length above which words will be ignored php solrquery returns the treshold frequency at which words will be ignored which do not occur in at least this many docs 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.