PHPWales 2020 - June 3rd to June 4th

maxdb_stmt_fetch

maxdb_stmt::fetch

(PECL maxdb >= 1.0)

maxdb_stmt_fetch -- maxdb_stmt::fetchFetch results from a prepared statement into the bound variables

说明

过程化风格

maxdb_stmt_fetch ( resource $stmt ) : bool

面向对象风格

maxdb_stmt::fetch ( void ) : bool

maxdb_stmt_fetch() returns row data using the variables bound by maxdb_stmt_bind_result().

Note:

Note that all columns must be bound by the application before calling maxdb_stmt_fetch().

返回值

Return values
Value Description
TRUE Success. Data has been fetched
FALSE Error occurred
NULL No more rows/data exists

范例

Example #1 面向对象风格

<?php
$maxdb 
= new maxdb("localhost""MONA""RED""DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   
printf("Connect failed: %s\n"maxdb_connect_error());
   exit();
}

$query "SELECT zip, name FROM hotel.city ORDER by name";

if (
$stmt $maxdb->prepare($query)) {

   
/* execute statement */
   
$stmt->execute();

   
/* bind result variables */
   
$stmt->bind_result($name$code);

   
/* fetch values */
   
while ($stmt->fetch()) {
       
printf ("%s (%s)\n"$name$code);
   }

   
/* close statement */
   
$stmt->close();
}

/* close connection */
$maxdb->close();
?>

Example #2 过程化风格

<?php
$link 
maxdb_connect("localhost""MONA""RED""DEMODB");

/* check connection */
if (maxdb_connect_errno()) {
   
printf("Connect failed: %s\n"maxdb_connect_error());
   exit();
}

$query "SELECT zip, name FROM hotel.city ORDER by name";

if (
$stmt maxdb_prepare($link$query)) {

   
/* execute statement */
   
maxdb_stmt_execute($stmt);

   
/* bind result variables */
   
maxdb_stmt_bind_result($stmt$name$code);

   
/* fetch values */
   
while (maxdb_stmt_fetch($stmt)) {
       
printf ("%s (%s)\n"$name$code);
   }

   
/* close statement */
   
maxdb_stmt_close($stmt);
}

/* close connection */
maxdb_close($link);
?>

以上例程的输出类似于:

12203 (Albany)
60601 (Chicago)
60615 (Chicago)
45211 (Cincinnati)
33575 (Clearwater)
75243 (Dallas)
32018 (Daytona Beach)
33441 (Deerfield Beach)
48226 (Detroit)
90029 (Hollywood)
92714 (Irvine)
90804 (Long Beach)
11788 (Long Island)
90018 (Los Angeles)
70112 (New Orleans)
10019 (New York)
10580 (New York)
92262 (Palm Springs)
97213 (Portland)
60018 (Rosemont)
95054 (Santa Clara)
20903 (Silver Spring)
20005 (Washington)
20019 (Washington)
20037 (Washington)

参见

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