belajar programming

file_put_contents()

Posted by sphinx on February 13, 2008.

/* file_put_contents() function in C - PHP Equivalent by sphinx */

int file_put_contents(char *file, char *data) {

  long long int size;
  FILE *fp;
  // later we could improve to have mode 0 or 1,
  //  as 1 == append if exist, and 0 == rewrite

  int mode = 0;

size = strlen(data);
  if(mode == 0) {
    fp = fopen(file,”wb”);
      if(fp) {
        fwrite(data, 1, size, fp);
      }
   else return 0;
  }
  fclose(fp);
  return 1;
}

file_get_contents()

Posted by sphinx on February 12, 2008.

/* file_get_contents() function in C - PHP Equivalent by sphinx */

// need filesize() function

char *file_get_contents(char *file) {
char *tmp;
long long int size;
FILE *fp;

size = filesize(file);

tmp = malloc(size + 1);
fp = fopen(file, “rb”);
if(fp) {
fread(tmp, 1, size, fp);
}
else { return 0; }
fclose(fp);
return (char *)tmp;
}

perbandingan waktu execution dengan php dan C

Posted by sphinx on February 8, 2008.

Iseng2 mau bandingin execution time dr file i/o menggunakan php dan C, sangat terlihat perdaan yang jauh sekali. Menggunakan C execution timenya 0.001s dan menggunakan PHP execution timenya 0.047s. (s = second = detik)

Dengan C:

[firman@muse ch]$ time ./test
#!/bin/ch
#include <stdio.h>

int main(void) {
printf("hello world\n");
return 0;
}

real    0m0.001s
user    0m0.000s
sys     0m0.001s

Source:

int main(void) {
printf(”%s\n”, file_get_contents(”a”) );
return 0;
}

Perhatian! file_get_contents() bukan fungsi standard ANSI C!

Dengan PHP:

[firman@muse ch]$ time php test.php
#!/bin/ch
#include <stdio.h>

int main(void) {
printf("hello world\n");
return 0;
}

real    0m0.047s
user    0m0.031s
sys     0m0.016s

Source:

<?php echo file_get_contents(”a”).”\n”; ?>

filesize()

Posted by sphinx on February 8, 2008.

/* filesize() function in C - PHP Equivalent by sphinx */

long long int filesize(char *file) {
  FILE *fp;
  long long int i = 0;
  fp = fopen(file,"rb");
  while(fgetc(fp) != EOF) {
  ++i; }
  fclose(fp);
  return i;
}

example usage:

int main(void) {
  printf("%ld", filesize("/path/to/filename"));
  return 0;
}