Usage analysis of sprintf() function in php

This article introduces the usage of sprintf() function in PHP. Friends in need can refer to it.

sprintf function

Definition and usage The sprintf() function writes a formatted string into a variable.

Grammar sprintf(format,arg1,arg2,arg++)

Parameter Description

format required. Convert format. arg1 required. Specifies the parameters to be inserted at the first % sign in the format string. arg2 optional. Specifies the parameter to be inserted into the format string at the second % sign. arg++ Optional. Specifies the parameters to be inserted into the format string at the third, fourth, etc. % symbols.

Instructions

The format parameter is the format of the conversion, starting with the percent sign ("%") and ending with the conversion character. The following are possible format values:

%% - returns the percent symbol %b - binary number %c - character according to ASCII value %d - signed decimal number %e - Continuous counting method (e.g. 1.5e+3) %u - unsigned decimal number %f - floating point number (local settings aware) %F - floating point number (not local settings aware) %o - octal number %s - string %x - Hexadecimal number (lowercase letters) %X - hexadecimal number (uppercase letters)

arg1, arg2, ++, etc. are inserted into the main string at the percent sign (%) symbol. This function is executed step by step. At the first % sign, arg1 is inserted, at the second % sign, arg2, and so on.

Tips and Notes Note: If there are more % symbols than arg arguments, you must use placeholders. The placeholder is inserted after the % symbol and consists of a number and "$".

Tips: Related functions: fprintf(), printf(), vfprintf(), vprintf(), and vsprintf().

The above content is excerpted from the php manual for your reference.