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PHP vsprintf() Function Usage and Example

　　 The vsprintf() function is used to return a formatted string

Syntax

string vsprintf ( string $format , array $args )

Definition and Usage

It returns a formatted string

Unlike sprintf(), the parameters in vsprintf() are located in an array. Array elements will be inserted into the main string at the percentage (%) symbol. This function is executed step by step. At the first % symbol, the first array element is inserted, at the second % symbol, the second array element is inserted, and so on.

Note:If there are more % symbols than arg parameters, you must use placeholders. Placeholders are inserted after the % symbol, consisting of a number and "\$".

Tip:Related functions:fprintf(),vfprintf(),printf(),sprintf() and vprintf()

Return value

It returns the array value in the form of a formatted string

Parameter

Number	Parameters and descriptions
1	format Specify the string and how to format the variables within it Possible format values: %% - Return a percent sign % %b - Binary number %c - Character corresponding to ASCII value %d - Decimal number with sign (negative, 0, positive) %e - Use lowercase scientific notation (for example 1.2e+2 %E - Use uppercase scientific notation (for example 1.2E+2 㩵n - Decimal number without sign (greater than or equal to 0) %f - Floating-point number (local setting) %F - Floating-point number (non-local setting) %g - Short %e and %f %G - Short %E and %f %o - Octal number %s - String %x - Hexadecimal numbers (lowercase letters) %X - Hexadecimal numbers (uppercase letters) Additional format values. They must be placed between % and the letter (for example %.2f): + (add + or - ) to define the sign of the number. By default, only negative numbers are marked, and positive numbers are not marked) ' (Specify what to use as the fill, the default is a space. It must be used with the width specifier. For example: %'x20s (use "x" as the fill) ) - (left-adjust the variable value) [0-9] (Specify the minimum width of the variable value) ].[0-9] (Specify the number of decimal places or maximum string length) Note:If multiple of the above format values are used, they must be used in the order specified above and cannot be mixed.
2	argarray Specify the array to insert parameters

Online Example

Try the following example, formatting dates, leading zeros for integers

Example

<?php
　　　　print vsprintf("%04d-%02d-%02d", explode('-', ''1990-12-25);
　　　
　　　　echo '<br>';
　　　　//Using format value %f
　　　　$num1　=　123;
　　　　$num2　=　456;
　　　　$txt = vsprintf("%f%f",array($num1$num2));
　　　　echo $txt;　　　
?>

Test and see‹/›

Output Result

1990-12-25
123.000000456.000000

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