How to remove bom header in php

The way to remove the bom header in php is: it can be achieved through the ltrim() function. The ltrim() function can remove whitespace characters or other predefined characters on the left side of a string. Specific usage: [$con=ltrim($con,"\XEF\XBB\XBF");].

#PHP can use the ltrim() function to remove the BOM header.

ltrim() function can remove whitespace characters or other predefined characters on the left side of a string.

Grammar format:

ltrim(string,charlist)

Code example:

<?php
//用fopen函数打开1.php文件
$file=fopen("1.php","r") or die ("unable to open file");
//读取1.php文件内容
$con=fread($file,filesize("1.php"));
//调用ltrim将1.php开头的BOM头去掉。
$con=ltrim($con,"\XEF\XBB\XBF");
//3.php文件
$newfile=fopen("3.php","w") or die ("unable to create file");
//通过fwrite命令将去掉BOM头的1.php文件的内容写入到3.php
fwrite($newfile,$con);
//关闭文件
fclose($newfile);
fclose($file);
?>

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