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php fwrite issue when accessing the file


php fwrite issue when accessing the file

By : Santo Puthoor
Date : November 18 2020, 03:49 PM
like below fixes the issue I think you only need to write the file and you are not intending for appending it every time the cron runs.
What , i feel , you can do in this situation is you can create a temp file every time your cron runs with the name say
code :
TEMP FILE - help/gossipcomtemp.html
MAIN FILE - help/gossipcom.html


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Issue with fwrite and fread

Issue with fwrite and fread


By : Vayra
Date : March 29 2020, 07:55 AM
Hope this helps Having an issue with my fwrite() and fread() dealing with a binary file here is my source code, and towards the bottem are my read and write. Right now it is returning 'jake' when I run it, and nothing else. I was told to write a dump buffer function to deal with the binary characters. In addition here is the text file as well, I am writing to a blank file called info.bin. PS I know that it is bad practice to save the zip as an int but this is what my professor is asking for.
code :
fwrite(&input_records[i], sizeof(struct info), 200000, fpbin);
buffer = (char *)malloc(sizeof(struct info));

fread(buffer, fileLen, 1, fpread);
fpbin = fopen("info2.bin", "wb");
if (!fp) 
{
dump_buffer(buffer, sizeof(buffer));
while (!feof (fp)) {
    fgets(line, sizeof(line),fp);
while(fgets(line, sizeof line, fp) != NULL) {
I have an issue with fwrite not properly overwriting a file

I have an issue with fwrite not properly overwriting a file


By : npolychr
Date : March 29 2020, 07:55 AM
To fix this issue I figured it out myself.
For some reason, using the onkeypress event, the event was being triggered and the function called before any characters were inserted into the TextArea, resulting in the file being written with an empty string.
Issue with fopen and fwrite PHP

Issue with fopen and fwrite PHP


By : Ako Zi Albert
Date : March 29 2020, 07:55 AM
I wish this helpful for you The code itself doesn't present any errors, other than the first check if the file exists and creating it is redundant.
Remove the file VarLog.txt if it exists to rule out ownership problems. Check what your working directory is. Your path right now isn't an absolute path, so files will be written relative to whatever the current working directory is (use getcwd() to find out what that path is, and check there).
Having an issue with fread and fwrite function

Having an issue with fread and fwrite function


By : user1613953
Date : March 29 2020, 07:55 AM
wish help you to fix your issue Diagnosis
I believe you are almost certainly working on a Windows system because you used "wt" in the fopen() mode. The t is not recognized by the C standard or most Unix systems. And also because you used fflush(stdin) which is essentially meaningless on non-Windows systems but is defined to do a more or less useful task on Windows systems.
code :
#include <stdio.h>
#include <stdlib.h>

struct estructura_salida
{
    int num_art;
    int exist;
};

enum { NUM_ENTRIES = 10 };

int main(void)
{
    struct estructura_salida listado[NUM_ENTRIES];
    struct estructura_salida ventas[NUM_ENTRIES];

    struct estructura_salida listadol[NUM_ENTRIES];
    struct estructura_salida ventasl[NUM_ENTRIES];

    for (int i = 0; i < NUM_ENTRIES; i++)
    {
        listado[i].num_art = i + 1;
        listado[i].exist = i + 20;
        ventas[i].num_art = i + 1;
        ventas[i].exist = i + 10;
    }

    printf("\ncargados\n");

    for (int i = 0; i < NUM_ENTRIES; i++)
    {
        printf("%i\t%i\t%i\n", listado[i].num_art, listado[i].exist, ventas[i].exist);
    }

    const char name1[] = "stock.dbf";
    const char name2[] = "ventas.dbf";
    FILE *fp1 = fopen(name1, "wb");
    FILE *fp2 = fopen(name2, "wb");
    if (fp1 == NULL)
    {
        fprintf(stderr, "Failed to open file %s for reading\n", name1);
        exit(EXIT_FAILURE);
    }
    if (fp2 == NULL)
    {
        fprintf(stderr, "Failed to open file %s for reading\n", name2);
        exit(EXIT_FAILURE);
    }

    fwrite(listado, sizeof(struct estructura_salida), NUM_ENTRIES, fp1);
    fwrite(ventas, sizeof(struct estructura_salida), NUM_ENTRIES, fp2);

    fclose(fp1);
    fclose(fp2);

    printf("\nleyendo el archivo");

    fp1 = fopen(name1, "rb");
    fp2 = fopen(name2, "rb");
    if (fp1 == NULL)
    {
        fprintf(stderr, "Failed to open file %s for reading\n", name1);
        exit(EXIT_FAILURE);
    }
    if (fp2 == NULL)
    {
        fprintf(stderr, "Failed to open file %s for reading\n", name2);
        exit(EXIT_FAILURE);
    }

    int n;
    for (n = 0; fread(&listadol[n], sizeof(listadol[n]), 1, fp1) == 1; n++)
        ;

    int m;
    for (m = 0; fread(&ventasl[m], sizeof(ventasl[m]), 1, fp2) == 1; m++)
        ;

    fclose(fp1);
    fclose(fp2);

    printf("\narchivo leido\n");
    if (n != m)
    {
        fprintf(stderr, "Read different numbers of records (%d from %s, %d from %s)\n",
                n, name1, m, name2);
        exit(EXIT_FAILURE);
    }

    for (int i = 0; i < n; i++)
    {
        printf("%i\t%i\t%i\n", listadol[i].num_art, listadol[i].exist, ventasl[i].exist);
    }

    return 0;
}
cargados
1   20  10
2   21  11
3   22  12
4   23  13
5   24  14
6   25  15
7   26  16
8   27  17
9   28  18
10  29  19

leyendo el archivo
archivo leido
1   20  10
2   21  11
3   22  12
4   23  13
5   24  14
6   25  15
7   26  16
8   27  17
9   28  18
10  29  19
stock.dbf:
0x0000: 01 00 00 00 14 00 00 00 02 00 00 00 15 00 00 00   ................
0x0010: 03 00 00 00 16 00 00 00 04 00 00 00 17 00 00 00   ................
0x0020: 05 00 00 00 18 00 00 00 06 00 00 00 19 00 00 00   ................
0x0030: 07 00 00 00 1A 00 00 00 08 00 00 00 1B 00 00 00   ................
0x0040: 09 00 00 00 1C 00 00 00 0A 00 00 00 1D 00 00 00   ................
0x0050:
ventas.dbf:
0x0000: 01 00 00 00 0A 00 00 00 02 00 00 00 0B 00 00 00   ................
0x0010: 03 00 00 00 0C 00 00 00 04 00 00 00 0D 00 00 00   ................
0x0020: 05 00 00 00 0E 00 00 00 06 00 00 00 0F 00 00 00   ................
0x0030: 07 00 00 00 10 00 00 00 08 00 00 00 11 00 00 00   ................
0x0040: 09 00 00 00 12 00 00 00 0A 00 00 00 13 00 00 00   ................
0x0050:
rewind(file pointer) and then fwrite. Won't fwrite overwrite the file contents? C

rewind(file pointer) and then fwrite. Won't fwrite overwrite the file contents? C


By : zahra
Date : March 29 2020, 07:55 AM
wish of those help Technically, yes
Yes, the file will be overwritten, but only for the length of the write. If the file is longer, in most cases (ordinary files on mainstream systems) the remaining bytes will be unchanged.
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