PHP Developer’s Dictionary IT-SC book 555 The imagepolygon() function creates a polygon, of color , defined by points and num_points in the image . The points parameter is an array containing the polygon's vertices (that is, points[0] = x0 , points[1] = y0 , points[2] = x1 , points[3] = y1 , and so on) and num_points is the total number of vertices. imagepsbbox() Syntax array imagepsbbox(string text, int font, int size [, int space [, int character_space [, float angle]]]) Description The imagepsbbox() function, which was added in PHP 3.0.9, gives the bounding box of a text rectangle using a PostScript Type 1 font . The optional space parameter enables you to define the size of a space, and character_space enables you to define the space between characters. Note Because the box is using information available from character metrics, you might want to specify an angle of 1 for what would normally be 0 . The array that is returned contains the items listed in Table 11.21 . Table 11.21. Contents of the Returned Array Indexed Array Position Description 0 Lower left x-coordinate 1 Lower left y-coordinate 2 Upper right x-coordinate 3 Upper right y-coordinate imagepsencodefont() Syntax int imagepsencodefont(string encoding_file) Description PHP Developer’s Dictionary IT-SC book 556 The imagepsencodefont() function, which was added in PHP 3.0.9, changes the character encoding vector of a font to encoding_file . Rather than calling this file, which is often used when you are creating text in a language other than English, you can set the ps.default_encoding directive in the php.ini file to the appropriate encoding font. imagepsfreefont() Syntax imagepsfreefont(int font_index) Description The imagepsfreefont() function, which was added in PHP 3.0.9, frees any memory (destroys) used by a PostScript Type 1 font. imagepsloadfont() Syntax int imagepsloadfont(string font) Description The imagepsloadfont() function, which was added in PHP 3.0.9, loads the PostScript Type 1 font . If there was an error, it will be returned and printed to you. imagepsextendfont() Syntax boolean imagepsextendfont(int font, double extend_or_condense) Description The imagepsextendfont() function, which was added in PHP 3.0.9, enables you to extend or condense the font by providing a larger or smaller number in the extend_or_condense parameter. imagepsslantfont() PHP Developer’s Dictionary IT-SC book 557 Syntax boolean imagepsslantfont(int font, double slant) Description The imagepsslantfont() function, which was added in PHP 3.0.9, slant s a particular font . imagepstext() Syntax array imagepstext(int image, string text, int font, int size, int foreground, int background, int x, int y [, int space [, int character_space [, float angle [, int antialias]]]]) Description The imagepstext() function, which was added in PHP 3.0.9, draws a text string over an image using PostScript Type 1 font that is proportioned by size . The foreground parameter contains the color you want to use for this text, and the background parameter contains the background color. The drawing itself starts at the specified x and y location. The optional space parameter enables you to define the size of a space, and the character_space enables you to define the space between characters. The antialias setting enables you to control the number of colors that will be used to antialias the text. This value can be between 4 – 16 . Note Because the string is using information available from character metrics, you might want to specify an angle of 1 for what would normally be 0 . The array that is returned contains the items listed in Table 11.22. Table 11.22. Contents of the Returned Array Indexed Array Position Description 0 Lower left x-coordinate PHP Developer’s Dictionary IT-SC book 558 1 Lower left y-coordinate 2 Upper right x-coordinate 3 Upper right y-coordinate imagerectangle() Syntax int imagerectangle(int image, int x_1, int y_1, int x_2, int y_2, int color) Description The imagerectangle() function draws a rectangle with color in image that starts at x_1 and y_1 and ends at x_2 and y_2 . imagesetpixel() Syntax int imagesetpixel(int image, int x, int y, int color) Description The imagesetpixel() function draws a single pixel with color in image that starts at x_1 and y_1 and ends at x_2 and y_2 . imagestring() Syntax int imagestring(int image, int font, int x, int y, string text, int color) Description The imagestring() function draws text in image with color in a horizontal manner. It starts at the x and y position defined and is in font . imagestringup() PHP Developer’s Dictionary IT-SC book 559 Syntax int imagestringup(int image, int font, int x, int y, string text, int color) Description The imagestringup() function draws text in image with color in a vertical (pointing up) manner. It starts at the x and y position defined and is in font. imagesx() Syntax int imagesx(int image) Description The imagesx() function returns the width of the image . imagesy() Syntax int imagesy(int image) Description The imagesy() function returns the height of the image . imagettfbbox() Syntax array imagettfbbox(int size, int angle, string font, string text) Description . imagepsencodefont(string encoding_file) Description PHP Developer’s Dictionary IT-SC book 556 The imagepsencodefont() function, which was added in PHP 3.0.9, changes the character encoding vector. in the php. ini file to the appropriate encoding font. imagepsfreefont() Syntax imagepsfreefont(int font_index) Description The imagepsfreefont() function, which was added in PHP 3.0.9,. which was added in PHP 3.0.9, enables you to extend or condense the font by providing a larger or smaller number in the extend_or_condense parameter. imagepsslantfont() PHP Developer’s Dictionary