php7

Hello

As I just moved recently to a newer machine running Debian 9 I started
debugging the php gpib module...

So far:

ibfind crashes
ibwrt times out as it always has a device number of 0
and ibrd returns nothing, though when doing some printf statements inside
ibrd function I can see that it successfully read something from my old
beloved HP 3456A (o;

ZEND_FUNCTION(ibrd)
{
    /* at the moment only the traditional form is supported
       $r = ibrd($ud,&$string,$count)
       (read at most $count bytes into $string)
       but
       $r = ibrd($ud,&$string)
       (read unlimited number of bytes) will be. Soon. Really.
    */
    long n;
    zval *z;
    long len;
    char *p;
    long r;
    if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC,
                  "lzl", &n, &z, &len)
        == FAILURE) {
        return;
    }

    p = (unsigned char *) malloc(len + 1);
    if(p == NULL) {
        ibsta |= ERR;
        iberr = EABO;  // should be ENOMEM
        RETURN_LONG(ibsta);
    }
    memset(p,0,len+1);

    r=ibrd(n,p,len);
    p[ibcnt]='\0';
    ZVAL_STRINGL(z,p, ibcnt);

    printf("Read %d bytes from device %d\n", ibcnt, n);
    printf("Returned %s\n", p);
    free(p);
    RETURN_LONG(r);
}


gives me:

klingler@debian:/home2/Develop/gpib$ php dmm.php
Read 14 bytes from device 16
Returned -02.84876E+0


any ideas what has changed between 5.x and 7.x in php?


thanks in advance
richard

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