How to realize the complement of less than 10 digits in php

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Complement method: 1. Use "str_pad(numerical value, 10,"0",STR_PAD_RIGHT)" statement, less than 10 bits are complemented by zeros;2. Use "sprintf("f", numerical variable)*pow(10,(10-strlen(numerical variable)))" statement, less than 10 bits are complemented by zeros.

Operating environment of this tutorial: Windows 7 system, PHP7.1 version, DELL G3 computer

Php implementation of less than 10 digits 0 complement the method

Use str_pad() function

str_pad() fills the string with a new length

Use str_pad() function to return 10 digits, padding zeros if less than 10 digits.

Note: Possible values for the fourth parameter of this function:

STR_PAD_BOTH -Fill both sides of the string. If not even, the right side gets extra padding.

STR_PAD_LEFT -Left side of padded string.

STR_PAD_RIGHT -The right side of the padded string. This is the default.

2. Use the sprintf() function

Format a numeric value using the sprintf() function, converting it to a floating-point number with specified decimal places.

Then multiply the decimal by (10 to the nth power) to convert it to 10 digits

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