Summary of methods for getting the number of lines in a file in php

stream_get_line gets the number of file lines

<?php
$file_path = &#39;xxx.txt&#39;; //文件路径
$line = 0 ; //初始化行数
//打开文件
$fp = fopen($file_path , &#39;r&#39;) or die("open file failure!");
if($fp){
//获取文件的一行内容，注意：需要php5才支持该函数；
while(stream_get_line($fp,8192,"\n")){
 $line++;
}
fclose($fp);//关闭文件
}
//输出行数；
echo $line;
?>

feof and fgets get the number of file lines

<?php
$lines = 0;//初始化行数
 
if ($fh = fopen(&#39;data.txt&#39;,&#39;r&#39;)) {//打开文件
 while (! feof($fh)) {//判断是否已经达到文件底部
  if (fgets($fh)) {//读取一行内容
   $lines++;
  }
 }
}
print $lines;
?>

count gets the number of file lines

<?php
 $line = count(file(&#39;filename&#39;));
 echo $line;
?>

The third way is because To save the contents of a file, The efficiency will be very poor. The editor here recommends that you use the first and second methods.

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