php str_pad() function
Translation results：
英[pæd] 美[pæd]
vt. To pad..., to add cushion; to stuff; to level it
vi. to walk, to walk lightly
n. Pad, lining; protective gear; pad; launching pad
Third person singular: pads Plural: pads Present participle: padding Past tense: padded Past participle: padded
php str_pad() functionsyntax
How to use str_pad() function?
php The str_pad() function is used to fill the string to the specified length. The syntax is str_pad(string,length,pad_string,pad_type) to fill the string to the specified length.
Function: Pall the string to the specified length
Syntax: str_pad(string,length,pad_string,pad_type)
Parameters:
| Parameters | Description |
| string | Must specify the string to be filled, |
| length | Must specify the new string length, if the value is less than the original length of the string, it will not Do any operation. |
| pad_string | Optional, specifies the string used for padding, the default is blank. |
| pad_type | Optional, specifies which side of the string to fill, STR_PAD_BOTH -- fills both sides of the string, if it is not an even number, the right side gets extra padding . STR_PAD_LEFT – pad the left side of the string. STR_PAD_RIGHT -- pad the right side of the string, default. |
Description: Fill the string to the specified length
php str_pad() functionexample
<?php $i = "hello world"; $j = str_pad($i,30,"!"); //未设置填充字符串位置，默认为右侧 echo $j; echo "<br>"; $k = "hello world"; $h = str_pad($k,30,".",STR_PAD_LEFT);//设置填充字符串的位置为左侧 echo $h; ?>
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Output:
hello world!!!!!!!!!!!!!!!!!!! ...................hello world