Analysis of sprintf() function in php (with code example)

In the previous article we introduced "Two ways to generate random numbers in php", this article will introduce thesprintf()function . PHP may need to include multiple variables continuously when outputting a string. If you useechodirectly, you need to splice each variable and the string, which will be troublesome, so we can usesprintf()function to solve this problem.

First let’s take a look at the syntax of thesprintf()function:

sprintf ( string $format , $arg1 ) : string

$format: a string containing placeholders.

$arg1: The corresponding variable in the string.

Code example:

"; echo sprintf("变量a八进制为:%o;",$a); echo "
"; echo sprintf("变量a十进制为:%d;",$a); echo "
"; echo sprintf("变量a十六进制为:%o;",$a); echo "
"; echo sprintf("变量b字符串为：%s",$b); echo "
";

输出：变量a二进制为:1010; 变量a八进制为:12; 变量a十进制为:10; 变量a十六进制为:12; 变量b字符串为：php.cn

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