How to solve the problem of insufficient length of php

Solution to the insufficient length of php: 1. Create a PHP sample file; 2. Use the "str_pad($value,2,0,STR_PAD_LEFT);" method to realize that the fixed length of the string is not enough to supplement other strings. Can.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to solve the problem of insufficient php length?

php The fixed length of the string is not enough to supplement other strings

// str_pad(带填补的字符串,填补后的长度，填补字符串，填补位置)
 $result=["7","6","8","4","3","23","27","9","5","19","10","21"];
 if($result){
    foreach ($result as $key => $value){
        $result[$key]=str_pad($value,2,0,STR_PAD_LEFT);
    }
 //$result =["07","06","08","04","03","23","27","09","05","19","10","21"]

Related introduction:

str_pad() function fills the string with the new length.

Syntax

str_pad(string,length,pad_string,pad_type)

Parameters

string必需。规定要填充的字符串。
length必需。规定新的字符串长度。如果该值小于字符串的原始长度，则不进行任何操作。
pad_string可选。规定供填充使用的字符串。默认是空白。
pad_type

Optional. Specifies which side of the string to fill.

Possible values:

STR_PAD_BOTH - 填充字符串的两侧。如果不是偶数，则右侧获得额外的填充。
STR_PAD_LEFT - 填充字符串的左侧。
STR_PAD_RIGHT - 填充字符串的右侧。默认。

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