How to implement replacement in php sprintf

php sprintf method to implement replacement: 1. Create a PHP sample file; 2. Pass the specified value through "sprintf("There are %u million cars in %s.",$number,$str);" Just replace the symbols.

The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

php sprintf How to implement replacement?

sprintf() function writes a formatted string into a variable.

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

Note: If there are more % symbols than arg arguments, you must use placeholders. The placeholder follows the % symbol and consists of a number and "\$". See example 2.

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

Example

The percent sign (%) symbol is replaced with a variable passed as a parameter:

<?php
$number = 2;
$str = "Shanghai";
$txt = sprintf("There are %u million cars in %s.",$number,$str);
echo $txt;
?>

Running result:

There are 2 million cars in Shanghai.

sprintf syntax:

sprintf(format,arg1,arg2,arg)

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