<?php 
 
/** 
 * 按行读取文件 
 * @param string $filename 
 */ 
function readFileByLine ($filename) 
{ 
  $fh = fopen($filename, 'r'); 
   
  while (! feof($fh)) { 
    $line = fgets($fh); 
    echo $line; 
  } 
   
  fclose($fh); 
} 
 
// test 
 
$filename = "/home/wzy/test/sort.txt"; 
 
readFileByLine($filename); 

#include <stdio.h> 
#include <stdlib.h> 
#include <string.h> 
 
#define LEN 1024 
 
int main(void) 
{ 
  char filename[LEN], buf[LEN]; 
  FILE *fp; 
  int len; 
 
  scanf("%s", filename); 
 
  fp = fopen(filename, "r"); 
 
  if (fp == NULL) exit(-1); 
 
  while (fgets(buf, LEN, fp) != NULL) { 
    len = strlen(buf); 
    buf[len - 1] = '\0';  // 去掉换行符 
 
    printf("%s\n", buf); 
  } 
 
  return 0; 
}