paypal 4 digit confirmation code

PHP generates a 4-or 5-digit combination of letters and numbers verification code lt ;? Php $ imgimagecreatetruecolor (100, 40); create a * 40 canvas $ blackimagecolorallocate ($ img, 0 x); define black $ greenimagecolorallocate ($ img, 0x00 PHP generates a 4-or 5-digit com

)function Mail() { varPatten2=NewREGEXP (/^[0-9| a-z|_]{1,17}[@][0-9| a-z]{1,3}. (COM) $/)//e-mail Regular expression varPatten1 =NewREGEXP (/(\d{11}) |^ ((\d{7,8}) | ( \D{4}|\D{3})-(\d{7,8}) | (\d{4}|\d{3})-(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1}) | (\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1})) $/)//mobile phone number Regula

This article mainly introduces the implementation code of the php digital verification code, which has some reference value. For more information, see This article mainly introduces the implementation code of the php digital verification code, which has some reference value. For more information, see It is very

This article mainly introduces the implementation code of the php digital verification code, which has some reference value. if you need it, it is very convenient to refer to implementing the verification code in php, the key point is to master the usage of the php gd library and session. Looking at the Online php verification

, -# code Font draw=Imagedraw.draw (image) # Create brush # text=Self.gene_text () # Generate string print (Self.text) font_width, Font_height=font.getsize (Self.text) Draw.text (((Width-font_width)/Self.number, (height-font_height)/Self.number), Self.text, Font=font, fill=self.fontcolor) # Fill StringifSelf.draw_line: forIinchRange (Self.line_number): Self.gene_line (Draw, width, height) # image= Image.transform ((width + -, Height +Ten), Image.affin