php的exec在linux中返回值不能为负数的问题

#include <stdio.h>
#include <stdlib.h>
int main()
{
    printf("^_^n");
    return -5;
}

$cmd  = 'Scripts/script.sh'; 
$cwd  = 'Scripts'; 
 
$spec = array( 
    // can something more portable be passed here instead of /dev/null? 
    0 => array('file', '/dev/null', 'r'), 
    1 => array('file', '/dev/null', 'w'), 
    2 => array('file', '/dev/null', 'w'), 
); 
 
$ph = proc_open($cmd, $spec, $pipes, $cwd); 
if ($ph === FALSE) { 
    // open error 
} 
 
// If we are not passing /dev/null like above, we should close 
// our ends of any pipes to signal that we're done. Otherwise 
// the call to proc_close below may block indefinitely. 
foreach ($pipes as $pipe) { 
    @fclose($pipe); 
} 
 
// will wait for the process to terminate 
$exit_code = proc_close($ph); 
if ($exit_code !== 0) { 
    // child error 
} 

/**************************************************************
 *
*    使用特定function对数组中所有元素做处理
*    @param    string    &$array        要处理的字符串
*    @param    string    $function    要执行的函数
*    @return boolean    $apply_to_keys_also        是否也应用到key上
*    @access public
*
*************************************************************/
function arrayRecursive(&$array, $function, $apply_to_keys_also = false)
{
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            arrayRecursive($array[$key], $function, $apply_to_keys_also);
        } else {
            $array[$key] = $function($value);
        }

        if ($apply_to_keys_also && is_string($key)) {
            $new_key = $function($key);
            if ($new_key != $key) {
                $array[$new_key] = $array[$key];
                unset($array[$key]);
            }
        }
    }
}

/**************************************************************
 *
*    将数组转换为JSON字符串（兼容中文）
*    @param    array    $array        要转换的数组
*    @return string        转换得到的json字符串
*    @access public
*
*************************************************************/
function JSON($array) {
    arrayRecursive($array, 'urlencode', true);
    $json = json_encode($array);
    return urldecode($json);
}

$dbcnx = @mysql_connect ( "localhost", "root", "1234" );
if (! $dbcnx) {
    echo ("Unable to connect to the " . "database server at this time.");
    exit ();
}

if (! @mysql_select_db ( "pms" )) {
    echo ("Unable to locate the joke " . "database at this time.");
    exit ();
}

mysql_query ( "SET NAMES 'GB2312'" );

    $q=mysql_query("select * from ability where ALV = 1");
    while($row=mysql_fetch_array($q)){
     $array1[] = $row[AName];
}

<script type="text/javascript" src="JS/jquery-1.7.2.min.js"></script>
<script type="text/javascript">
var ability1=<?php echo JSON($array1);?>;
var a=eval("ability1");
alert(a[0]);
</script>

 
<?php
/* 处理json_encode中文乱码 */
$data = array ('game' => '冰火国度', 'name' => '刺之灵', 'country' => '冰霜国', 'level' => 45 );
echo json_encode ( $data );
echo "<br>";
$newData = array ();
foreach ( $data as $key => $value ) {
$newData [$key] = urlencode ( $value );
}
echo urldecode ( json_encode ( $newData ) );
?>
 

<?php
class myClass {
public $item1 = 1;
public $item2 = '中文';
function to_json() {
//url编码,避免json_encode将中文转为unicode
$this->item2 = urlencode($this->item2);
$str_json = json_encode($this);
//url解码,转完json后将各属性返回,确保对象属性不变
$this->item2 = urldecode($this->item2);
return urldecode($str_json);
}
}
$c = new myClass();
echo json_encode($c);
echo '<br/>';
echo $c->to_json();
echo '<br/>';
echo json_encode($c);
echo '<br/>';
echo json_encode('胥');
?>

程序输出结果：

{"item1":1,"item2":"u4e2du6587"}
{"item1":1,"item2":"中文"}
{"item1":1,"item2":"u4e2du6587"}
"u80e5"
 

FOREACH ($array_variable as $value)
{
  [code to execute]
}

or

FOREACH ($array_variable as $key => $value)
{
  [code to execute]
}

new value is 10
new value is 20
new value is 30
new value is 40
new value is 50

$a = array(1, 2);
$b = array(11, 12);
foreach($a as &$r){
}
foreach($b as $r){
}
echo $a[1]; // 输出 12

cd /usr/src
wget http://pecl.php.net/get/zip
tar -zxvf zip
cd zip-1.x.x
phpize
./configure
make
sudo make instal