php获取cpu与内存使用情况的代码一例

3. /*

4. @系统参数探测 LINUX
5. @Edit bbs.it-home.org
6. @date 2013/5/8
7. */
8. function sys_linux()
9. {
10. // CPU
11. if (false === ($str = @file(“/proc/cpuinfo”))) return false;
12. $str = implode(“”, $str);
13. @preg_match_all(“/model\s+name\s{0,}\:+\s{0,}([\w\s\)\(.]+)[\r\n]+/”, $str, $model);
14. //@preg_match_all(“/cpu\s+MHz\s{0,}\:+\s{0,}([\d\.]+)[\r\n]+/”, $str, $mhz);
15. @preg_match_all(“/cache\s+size\s{0,}\:+\s{0,}([\d\.]+\s{0,}[A-Z]+[\r\n]+)/”, $str, $cache);
16. if (false !== is_array($model[1]))
17. {
18. $res['cpu']['num'] = sizeof($model[1]);
19. for($i = 0; $i < $res['cpu']['num']; $i++)
20. {
21. $res['cpu']['detail'][] = “类型：”.$model[1][$i].” 缓存：”.$cache[1][$i];
22. }
23. if (false !== is_array($res['cpu']['detail'])) $res['cpu']['detail'] = implode(”
24. “, $res['cpu']['detail']);
25. }

26. // UPTIME

27. if (false === ($str = @file(“/proc/uptime”))) return false;
28. $str = explode(” “, implode(“”, $str));
29. $str = trim($str[0]);
30. $min = $str / 60;
31. $hours = $min / 60;
32. $days = floor($hours / 24);
33. $hours = floor($hours – ($days * 24));
34. $min = floor($min – ($days * 60 * 24) – ($hours * 60));
35. if ($days !== 0) $res['uptime'] = $days.”天”;
36. if ($hours !== 0) $res['uptime'] .= $hours.”小时”;
37. $res['uptime'] .= $min.”分钟”;

38. // MEMORY

39. if (false === ($str = @file(“/proc/meminfo”))) return false;
40. $str = implode(“”, $str);
41. preg_match_all(“/MemTotal\s{0,}\:+\s{0,}([\d\.]+).+?MemFree\s{0,}\:+\s{0,}([\d\.]+).+?SwapTotal\s{0,}\:+\s{0,}([\d\.]+).+?SwapFree\s{0,}\:+\s{0,}([\d\.]+)/s”, $str, $buf);

42. $res['memTotal'] = round($buf[1][0]/1024, 2);

43. $res['memFree'] = round($buf[2][0]/1024, 2);
44. $res['memUsed'] = ($res['memTotal']-$res['memFree']);
45. $res['memPercent'] = (floatval($res['memTotal'])!=0)?round(($res['memUsed']/$res['memTotal'])*90,2):0;

46. $res['swapTotal'] = round($buf[3][0]/1024, 2);

47. $res['swapFree'] = round($buf[4][0]/1024, 2);
48. $res['swapUsed'] = ($res['swapTotal']-$res['swapFree']);
49. $res['swapPercent'] = (floatval($res['swapTotal'])!=0)?round(($res['swapUsed']/$res['swapTotal'])*90,2):0;

50. // LOAD AVG

51. if (false === ($str = @file(“/proc/loadavg”))) return false;
52. $str = explode(” “, implode(“”, $str));
53. $str = array_chunk($str, 3);
54. $res['loadAvg'] = implode(” “, $str[0]);

55. return $res;

56. }
57. /*
58. 系统参数探测 FreeBSD
59. */
60. function sys_freebsd()
61. {
62. //CPU
63. if (false === ($res['cpu']['num'] = get_key(“hw.ncpu”))) return false;
64. $res['cpu']['detail'] = get_key(“hw.model”);

65. //LOAD AVG

66. if (false === ($res['loadAvg'] = get_key(“vm.loadavg”))) return false;
67. $res['loadAvg'] = str_replace(“{“, “”, $res['loadAvg']);
68. $res['loadAvg'] = str_replace(“}”, “”, $res['loadAvg']);

69. //UPTIME

70. if (false === ($buf = get_key(“kern.boottime”))) return false;
71. $buf = explode(‘ ‘, $buf);
72. $sys_ticks = time() – intval($buf[3]);
73. $min = $sys_ticks / 60;
74. $hours = $min / 60;
75. $days = floor($hours / 24);
76. $hours = floor($hours – ($days * 24));
77. $min = floor($min – ($days * 60 * 24) – ($hours * 60));
78. if ($days !== 0) $res['uptime'] = $days.”天”;
79. if ($hours !== 0) $res['uptime'] .= $hours.”小时”;
80. $res['uptime'] .= $min.”分钟”;

81. //MEMORY

82. if (false === ($buf = get_key(“hw.physmem”))) return false;
83. $res['memTotal'] = round($buf/1024/1024, 2);
84. $buf = explode(“\n”, do_command(“vmstat”, “”));
85. $buf = explode(” “, trim($buf[2]));

86. $res['memFree'] = round($buf[5]/1024, 2);

87. $res['memUsed'] = ($res['memTotal']-$res['memFree']);
88. $res['memPercent'] = (floatval($res['memTotal'])!=0)?round(($res['memUsed']/$res['memTotal'])*90,2):0;

89. $buf = explode(“\n”, do_command(“swapinfo”, “-k”));

90. $buf = $buf[1];
91. preg_match_all(“/([0-9]+)\s+([0-9]+)\s+([0-9]+)/”, $buf, $bufArr);
92. $res['swapTotal'] = round($bufArr[1][0]/1024, 2);
93. $res['swapUsed'] = round($bufArr[2][0]/1024, 2);
94. $res['swapFree'] = round($bufArr[3][0]/1024, 2);
95. $res['swapPercent'] = (floatval($res['swapTotal'])!=0)?round(($res['swapUsed']/$res['swapTotal'])*90,2):0;

96. return $res;

97. }

98. /*

99. 取得参数值 FreeBSD
100. */
101. function get_key($keyName)
102. {
103. return do_command(‘sysctl’, “-n $keyName”);
104. }

105. /*

106. 确定执行文件位置 FreeBSD
107. */
108. function find_command($commandName)
109. {
110. $path = array(‘/bin’, ‘/sbin’, ‘/usr/bin’, ‘/usr/sbin’, ‘/usr/local/bin’, ‘/usr/local/sbin’);
111. foreach($path as $p)
112. {
113. if (@is_executable(“$p/$commandName”)) return “$p/$commandName”;
114. }
115. return false;
116. }

117. /*

118. 执行系统命令 FreeBSD
119. */
120. function do_command($commandName, $args)
121. {
122. $buffer = “”;
123. if (false === ($command = find_command($commandName))) return false;
124. if ($fp = @popen(“$command $args”, ‘r’))
125. {
126. while (!@feof($fp))
127. {
128. $buffer .= @fgets($fp, 4096);
129. }
130. return trim($buffer);
131. }
132. return false;
133. }
134. ?>

说明： memory用此函数可搞定: memory_get_usage() 在Windows下面只能读取cmd命令运行的结果。 例如：

2. $a = system(‘mem’);
3. echo $a.”
4. “;
5. //或者
6. $a = system(‘mem’);
7. echo $a.”
8. “;
9. ?>