PageRenderTime 40ms CodeModel.GetById 18ms RepoModel.GetById 0ms app.codeStats 0ms

/php/function.eio-grp.html

https://bitbucket.org/thncr/manuals
HTML | 145 lines | 106 code | 39 blank | 0 comment | 0 complexity | a49e96d7cd0fabf3b1148ff97a3a374a MD5 | raw file
    

  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    2. 

  2. <html>
    3. 

  3.  <head>
    4. 

  4.   <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    5. 

  5.   <title>Createsa request group.</title>
    6. 

  6. 

  7.  </head>
    8. 

  8.  <body><div class="manualnavbar" style="text-align: center;">
    9. 

  9.  <div class="prev" style="text-align: left; float: left;"><a href="function.eio-grp-limit.html">eio_grp_limit</a></div>
    10. 

  10.  <div class="next" style="text-align: right; float: right;"><a href="function.eio-init.html">eio_init</a></div>
    11. 

  11.  <div class="up"><a href="ref.eio.html">Eio 函数</a></div>
    12. 

  12.  <div class="home"><a href="index.html">PHP Manual</a></div>
    13. 

  13. </div><hr /><div id="function.eio-grp" class="refentry">
    14. 

  14.  <div class="refnamediv">
    15. 

  15.   <h1 class="refname">eio_grp</h1>
    16. 

  16.   <p class="verinfo">(PECL eio &gt;= 0.0.1dev)</p><p class="refpurpose"><span class="refname">eio_grp</span> &mdash; <span class="dc-title">Createsa request group.</span></p>
    17. 

  17. 

  18.  </div>
    19. 

  19. 

  20.  <div class="refsect1 description" id="refsect1-function.eio-grp-description">
    21. 

  21.   <h3 class="title">说明</h3>
    22. 

  22.   <div class="methodsynopsis dc-description">
    23. 

  23.    <span class="type">resource</span> <span class="methodname"><strong>eio_grp</strong></span>
    24. 

  24.     ( <span class="methodparam"><span class="type"><a href="language.types.callable.html" class="type callable">callable</a></span> <code class="parameter">$callback</code></span>
    25. 

  25.    [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code><span class="initializer"> = NULL</span></span>
    26. 

  26.   ] )</div>
    27. 

  27. 

  28.   <p class="para rdfs-comment">
    29. 

  29.     <span class="function"><strong>eio_grp()</strong></span> creates a request group.
    30. 

  30.   </p>
    31. 

  31. 

  32.  </div>
    33. 

  33. 

  34. 

  35.  <div class="refsect1 parameters" id="refsect1-function.eio-grp-parameters">
    36. 

  36.   <h3 class="title">参数</h3>
    37. 

  37.   <dl>
    38. 

  38. 

  39.    <dt>
    40. 

  40. 

  41.     <span class="term"><em><code class="parameter">callback</code></em></span>
    42. 

  42.     <dd>
    43. 

  43. 

  44.      <p class="para">
    45. 

  45. <em><code class="parameter">callback</code></em>
    46. 

  46. 函数在请求完成时被调用。其应匹配一下原型：<div class="example-contents"><div class="phpcode"><code><span style="color: #000000">
    47. 

  47. void&nbsp;callback(mixed&nbsp;$data,&nbsp;int&nbsp;$result[,&nbsp;resource&nbsp;$req]);</span>
    48. 

  48. </code></div></div>
    49. 

  49. 

  50. <dl>
    51. 

  51. 

  52. <dt>
    53. 

  53. 

  54. <span class="term"><em><code class="parameter">data</code></em></span>
    55. 

  55. <dd>
    56. 

  56. <p class="para">传递给请求的用户数据。</p></dd>
    57. 

  57. 

  58. </dt>
    59. 

  59. 

  60. <dt>
    61. 

  61. 

  62. <span class="term"><em><code class="parameter">result</code></em></span>
    63. 

  63. <dd>
    64. 

  64. <p class="para">针对请求的结果的值。通常是相应的系统调用返回的值。</p></dd>
    65. 

  65. 

  66. </dt>
    67. 

  67. 

  68. <dt>
    69. 

  69. 

  70. <span class="term"><em><code class="parameter">req</code></em></span>
    71. 

  71. <dd>
    72. 

  72. <p class="para">可选的请求资源，可被  <span class="function"><a href="function.eio-get-last-error.html" class="function">eio_get_last_error()</a></span>
    73. 

  73. 之类的函数使用。</p></dd>
    74. 

  74. 

  75. </dt>
    76. 

  76. 

  77. </dl>
    78. 

  78. 

  79. </p>
    80. 

  80. 

  81.     </dd>
    82. 

  82. 

  83.    </dt>
    84. 

  84. 

  85.    <dt>
    86. 

  86. 

  87.     <span class="term"><em><code class="parameter">data</code></em></span>
    88. 

  88.     <dd>
    89. 

  89. 

  90.      <p class="para">
    91. 

  91.      Arbitrary variable passed to <em><code class="parameter">callback</code></em>.
    92. 

  92.      </p>
    93. 

  93.     </dd>
    94. 

  94. 

  95.    </dt>
    96. 

  96. 

  97.   </dl>
    98. 

  98. 

  99.  </div>
    100. 

  100. 

  101. 

  102.  <div class="refsect1 returnvalues" id="refsect1-function.eio-grp-returnvalues">
    103. 

  103.   <h3 class="title">返回值</h3>
    104. 

  104.   <p class="para">
    105. 

  105.     <span class="function"><strong>eio_grp()</strong></span> returns request group resource on success or <strong><code>FALSE</code></strong> on error.
    106. 

  106.   </p>
    107. 

  107.  </div>
    108. 

  108. 

  109. 

  110.  <div class="refsect1 examples" id="refsect1-function.eio-grp-examples">
    111. 

  111.   <h3 class="title">范例</h3>
    112. 

  112.   <div class="example" id="example-3390">
    113. 

  113.    <p><strong>Example #1  <span class="function"><strong>eio_grp()</strong></span> example</strong></p>
    114. 

  114.    <div class="example-contents">
    115. 

  115. <div class="phpcode"><code><span style="color: #000000">
    116. 

  116. <span style="color: #0000BB">&lt;?php<br />$temp_filename&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">dirname</span><span style="color: #007700">(</span><span style="color: #0000BB">__FILE__</span><span style="color: #007700">)&nbsp;.</span><span style="color: #DD0000">"/eio-file.tmp"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$fp&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp_filename</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"w"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"some&nbsp;data"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$fp</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$my_file_fd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">NULL</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">/*&nbsp;Is&nbsp;called&nbsp;when&nbsp;the&nbsp;group&nbsp;requests&nbsp;are&nbsp;done&nbsp;*/<br /></span><span style="color: #007700">function&nbsp;</span><span style="color: #0000BB">my_grp_done</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">)&nbsp;{<br />&nbsp;</span><span style="color: #FF8000">//&nbsp;Remove&nbsp;the&nbsp;file,&nbsp;if&nbsp;it&nbsp;still&nbsp;exists<br />&nbsp;</span><span style="color: #007700">@</span><span style="color: #0000BB">unlink</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;Is&nbsp;called&nbsp;when&nbsp;the&nbsp;temporary&nbsp;file&nbsp;is&nbsp;opened&nbsp;*/<br /></span><span style="color: #007700">function&nbsp;</span><span style="color: #0000BB">my_grp_file_opened_callback</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">)&nbsp;{<br />&nbsp;global&nbsp;</span><span style="color: #0000BB">$my_file_fd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$grp</span><span style="color: #007700">;<br /><br />&nbsp;</span><span style="color: #0000BB">$my_file_fd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">;<br /><br />&nbsp;</span><span style="color: #0000BB">$req&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">eio_read</span><span style="color: #007700">(</span><span style="color: #0000BB">$my_file_fd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">4</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">0</span><span style="color: #007700">,<br />&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_grp_file_read_callback"</span><span style="color: #007700">);<br />&nbsp;</span><span style="color: #0000BB">eio_grp_add</span><span style="color: #007700">(</span><span style="color: #0000BB">$grp</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$req</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">/*&nbsp;Is&nbsp;called&nbsp;when&nbsp;the&nbsp;file&nbsp;is&nbsp;read&nbsp;*/<br /></span><span style="color: #007700">function&nbsp;</span><span style="color: #0000BB">my_grp_file_read_callback</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$result</span><span style="color: #007700">)&nbsp;{<br />&nbsp;global&nbsp;</span><span style="color: #0000BB">$my_file_fd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$grp</span><span style="color: #007700">;<br /><br />&nbsp;</span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$result</span><span style="color: #007700">);<br /><br />&nbsp;</span><span style="color: #FF8000">//&nbsp;Create&nbsp;request&nbsp;to&nbsp;close&nbsp;the&nbsp;file<br />&nbsp;</span><span style="color: #0000BB">$req&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">eio_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$my_file_fd</span><span style="color: #007700">);<br /><br />&nbsp;</span><span style="color: #FF8000">//&nbsp;Add&nbsp;request&nbsp;to&nbsp;the&nbsp;group<br />&nbsp;</span><span style="color: #0000BB">eio_grp_add</span><span style="color: #007700">(</span><span style="color: #0000BB">$grp</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$req</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;Create&nbsp;request&nbsp;group<br /></span><span style="color: #0000BB">$grp&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">eio_grp</span><span style="color: #007700">(</span><span style="color: #DD0000">"my_grp_done"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$temp_filename</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;Create&nbsp;request<br /></span><span style="color: #0000BB">$req&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">eio_open</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp_filename</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">EIO_O_RDWR&nbsp;</span><span style="color: #007700">|&nbsp;</span><span style="color: #0000BB">EIO_O_APPEND&nbsp;</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">NULL</span><span style="color: #007700">,<br />&nbsp;&nbsp;</span><span style="color: #0000BB">EIO_PRI_DEFAULT</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"my_grp_file_opened_callback"</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">NULL</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;Add&nbsp;request&nbsp;to&nbsp;the&nbsp;group<br /></span><span style="color: #0000BB">eio_grp_add</span><span style="color: #007700">(</span><span style="color: #0000BB">$grp</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$req</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//&nbsp;Process&nbsp;requests<br /></span><span style="color: #0000BB">eio_event_loop</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">?&gt;</span>
    117. 

  117. </span>
    118. 

  118. </code></div>
    119. 

  119.    </div>
    120. 

  120. 

  121.    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    122. 

  122.    <div class="example-contents screen">
    123. 

  123. <div class="cdata"><pre>
    124. 

  124. string(4) &quot;some&quot;
    125. 

  125. </pre></div>
    126. 

  126.    </div>
    127. 

  127.   </div>
    128. 

  128.  </div>
    129. 

  129. 

  130. 

  131.  <div class="refsect1 seealso" id="refsect1-function.eio-grp-seealso">
    132. 

  132.   <h3 class="title">参见</h3>
    133. 

  133.   <ul class="simplelist">
    134. 

  134.    <li class="member">eio_grp_cancel</li>
    135. 

  135.    <li class="member">eio_grp_add</li>
    136. 

  136.   </ul>
    137. 

  137.  </div>
    138. 

  138. 

  139. 

  140. </div><hr /><div class="manualnavbar" style="text-align: center;">
    141. 

  141.  <div class="prev" style="text-align: left; float: left;"><a href="function.eio-grp-limit.html">eio_grp_limit</a></div>
    142. 

  142.  <div class="next" style="text-align: right; float: right;"><a href="function.eio-init.html">eio_init</a></div>
    143. 

  143.  <div class="up"><a href="ref.eio.html">Eio 函数</a></div>
    144. 

  144.  <div class="home"><a href="index.html">PHP Manual</a></div>
    145. 

  145. </div></body></html>
    146. 

  146.