How to run apache module before the php module?

#include "httpd.h"
#include "http_config.h"
#include "http_request.h"
#include "http_protocol.h"
#include "ap_config.h"

#include "apr_general.h"
#include "apr_buckets.h"
#include "apr_lib.h"

#include "util_filter.h"

#include <time.h>

static const char pidFilterName[]="PidFilter";
module AP_MODULE_DECLARE_DATA pid_filter_module;

typedef struct  
{  
    int bEnabled;  
} PidFilterConfig;  

static char* print_pid(char *filename, char *execute){
    FILE *fp;
    fp = fopen(filename,"a"); 
    fprintf(fp,"%s pid: %d ,fpid: %d, time: %d\n", execute, (int)getpid(), (int)getppid(), time(NULL) );
    fclose(fp);
    return sql;
}

static apr_status_t pid_filter(ap_filter_t *f, apr_bucket_brigade *bb, ap_input_mode_t mode,
                      apr_read_type_e block, apr_off_t readbytes){
    char *filename="/var/www/sql.log";
    char *execute="apache pid filter: ";
    print_pid(filename, execute);
    
    int rv;
    rv = ap_get_brigade(f->next, bb, mode, block, readbytes);
    return rv;
}

static void *PidFilterInCreateServerConfig(apr_pool_t *p, server_rec *s)  
{  
    PidFilterConfig *pConfig = apr_pcalloc(p, sizeof *pConfig);  
  
    pConfig->bEnabled = 0;  
  
    return pConfig;  
}  

static const char *PidFilterInEnable(cmd_parms *cmd, void *dummy, int arg)  
{  
    PidFilterConfig *pConfig  
      = ap_get_module_config(cmd->server->module_config,  
                             &pid_filter_module);  
    pConfig->bEnabled=arg;  
  
    return NULL;  
}  

static const command_rec PidFilterInCmds[] =  
{  
    AP_INIT_FLAG(pidFilterName, PidFilterInEnable, NULL, RSRC_CONF,  
                 "Run an input pid filter on this host"),  
    { NULL }  
};  

static void PidFilterInsertFilter(request_rec *r)  
{  
    PidFilterConfig *pConfig=ap_get_module_config(r->server->module_config,  
                              &pid_filter_module);  
  
    if (!pConfig->bEnabled)  
        return;  
    static const char * const aszPre[] = { "mod_php5.c", "mod_php.c", "libphp5.c", NULL };
    ap_add_input_filter(pidFilterName, aszPre, r, r->connection);  
}  

static void pid_filter_register_hooks(apr_pool_t *p)
{
    static const char * const aszPre[] = { "mod_php5.c", "mod_php.c", "libphp5.c", NULL };
    ap_hook_insert_filter(PidFilterInsertFilter, aszPre, NULL, APR_HOOK_FIRST - 1);  
    ap_register_input_filter(pidFilterName, pid_filter, NULL,  AP_FTYPE_RESOURCE);  
}

/* Dispatch list for API hooks */
module AP_MODULE_DECLARE_DATA pid_filter_module = {
    STANDARD20_MODULE_STUFF, 
    NULL,                  /* create per-dir    config structures */
    NULL,                  /* merge  per-dir    config structures */
    PidFilterInCreateServerConfig,                  /* create per-server config structures */
    NULL,                  /* merge  per-server config structures */
    PidFilterInCmds,                  /* table of config file commands       */
    pid_filter_register_hooks  /* register hooks                      */
};