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  1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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  2. <html>
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  3.  <head>
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  4.   <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    5. 

  5.   <title>Set the type of a variable</title>
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  6. 

  7.  </head>
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  8.  <body><div class="manualnavbar" style="text-align: center;">
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  11.  <div class="up"><a href="ref.var.html">Variable handling Functions</a></div>
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  12.  <div class="home"><a href="index.html">PHP Manual</a></div>
    13. 

  13. </div><hr /><div id="function.settype" class="refentry">
    14. 

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

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

  16.   <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">settype</span> &mdash; <span class="dc-title">Set the type of a variable</span></p>
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  17. 

  18.  </div>
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  19. 

  20.  <div class="refsect1 description" id="refsect1-function.settype-description">
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  21.   <h3 class="title">Description</h3>
    22. 

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

  23.    <span class="type">bool</span> <span class="methodname"><b>settype</b></span>
    24. 

  24.     ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter reference">&$var</tt></span>
    25. 

  25.    , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$type</tt></span>
    26. 

  26.    )</div>
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  27. 

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

  29.    Set the type of variable <i><tt class="parameter">var</tt></i> to
    30. 

  30.    <i><tt class="parameter">type</tt></i>.
    31. 

  31.   </p>
    32. 

  32.  </div>
    33. 

  33. 

  34. 

  35.  <div class="refsect1 parameters" id="refsect1-function.settype-parameters">
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  36.   <h3 class="title">Parameters</h3>
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  37.   <p class="para">
    38. 

  38.    <dl>
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  39. 

  40.     <dt>
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  41. 

  42.      <span class="term"><i><tt class="parameter">var</tt></i></span>
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  43.      <dd>
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  44. 

  45.       <p class="para">
    46. 

  46.        The variable being converted.
    47. 

  47.       </p>
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  48.      </dd>
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  49. 

  50.     </dt>
    51. 

  51. 

  52.     <dt>
    53. 

  53. 

  54.      <span class="term"><i><tt class="parameter">type</tt></i></span>
    55. 

  55.      <dd>
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  56. 

  57.       <p class="para">
    58. 

  58.        Possibles values of <i><tt class="parameter">type</tt></i> are:
    59. 

  59.        <ul class="itemizedlist">
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  60.         <li class="listitem">
    61. 

  61.          <span class="simpara">
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  62.           &quot;boolean&quot; (or, since PHP 4.2.0, &quot;bool&quot;)
    63. 

  63.          </span>
    64. 

  64.         </li>
    65. 

  65.         <li class="listitem">
    66. 

  66.          <span class="simpara">
    67. 

  67.           &quot;integer&quot; (or, since PHP 4.2.0, &quot;int&quot;)
    68. 

  68.          </span>
    69. 

  69.         </li>
    70. 

  70.         <li class="listitem">
    71. 

  71.          <span class="simpara">
    72. 

  72.           &quot;float&quot; (only possible since PHP 4.2.0, for older versions use the
    73. 

  73.           deprecated variant &quot;double&quot;)
    74. 

  74.          </span>
    75. 

  75.         </li>
    76. 

  76.         <li class="listitem">
    77. 

  77.          <span class="simpara">
    78. 

  78.           &quot;string&quot;
    79. 

  79.          </span>
    80. 

  80.         </li>
    81. 

  81.         <li class="listitem">
    82. 

  82.          <span class="simpara">
    83. 

  83.           &quot;array&quot;
    84. 

  84.          </span>
    85. 

  85.         </li>
    86. 

  86.         <li class="listitem">
    87. 

  87.          <span class="simpara">
    88. 

  88.           &quot;object&quot;
    89. 

  89.          </span>
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  90.         </li>
    91. 

  91.         <li class="listitem">
    92. 

  92.          <span class="simpara">
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  93.           &quot;null&quot; (since PHP 4.2.0)
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  94.          </span>
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  95.         </li>
    96. 

  96.        </ul>
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  97.       </p>
    98. 

  98.      </dd>
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  99. 

  100.     </dt>
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  101. 

  102.    </dl>
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  103. 

  104.   </p>
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  105.  </div>
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  106. 

  107. 

  108.  <div class="refsect1 returnvalues" id="refsect1-function.settype-returnvalues">
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  109.   <h3 class="title">Return Values</h3>
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  110.   <p class="para">
    111. 

  111.    Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure.
    112. 

  112.   </p>
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  113.  </div>
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  114. 

  115. 

  116.  <div class="refsect1 examples" id="refsect1-function.settype-examples">
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  117.   <h3 class="title">Examples</h3>
    118. 

  118.   <p class="para">
    119. 

  119.    <div class="example" id="example-4491">
    120. 

  120.     <p><b>Example #1 <span class="function"><b>settype()</b></span> example</b></p>
    121. 

  121.     <div class="example-contents">
    122. 

  122. <div class="phpcode"><code><span style="color: #000000">
    123. 

  123. <span style="color: #0000BB">&lt;?php<br />$foo&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"5bar"</span><span style="color: #007700">;&nbsp;</span><span style="color: #FF8000">//&nbsp;string<br /></span><span style="color: #0000BB">$bar&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">true</span><span style="color: #007700">;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;boolean<br /><br /></span><span style="color: #0000BB">settype</span><span style="color: #007700">(</span><span style="color: #0000BB">$foo</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"integer"</span><span style="color: #007700">);&nbsp;</span><span style="color: #FF8000">//&nbsp;$foo&nbsp;is&nbsp;now&nbsp;5&nbsp;&nbsp;&nbsp;(integer)<br /></span><span style="color: #0000BB">settype</span><span style="color: #007700">(</span><span style="color: #0000BB">$bar</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"string"</span><span style="color: #007700">);&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;$bar&nbsp;is&nbsp;now&nbsp;"1"&nbsp;(string)<br /></span><span style="color: #0000BB">?&gt;</span>
    124. 

  124. </span>
    125. 

  125. </code></div>
    126. 

  126.     </div>
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  127. 

  128.    </div>
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  129.   </p>
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  130.  </div>
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  131. 

  132. 

  133.  <div class="refsect1 notes" id="refsect1-function.settype-notes">
    134. 

  134.   <h3 class="title">Notes</h3>
    135. 

  135.   <blockquote class="note"><p><b class="note">Note</b>: 
    136. 

  136.    <p class="para">
    137. 

  137.     Maximum value for &quot;int&quot; is <b><tt>PHP_INT_MAX</tt></b>.
    138. 

  138.    </p>
    139. 

  139.   </p></blockquote>
    140. 

  140.  </div>
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  141. 

  142. 

  143.  <div class="refsect1 seealso" id="refsect1-function.settype-seealso">
    144. 

  144.   <h3 class="title">See Also</h3>
    145. 

  145.   <p class="para">
    146. 

  146.    <ul class="simplelist">
    147. 

  147.     <li class="member"><span class="function"><a href="function.gettype.html" class="function" rel="rdfs-seeAlso">gettype()</a> - Get the type of a variable</span></li>
    148. 

  148.     <li class="member"><a href="language.types.type-juggling.html#language.types.typecasting" class="link">type-casting</a></li>
    149. 

  149.     <li class="member"><a href="language.types.type-juggling.html" class="link">type-juggling</a></li>
    150. 

  150.    </ul>
    151. 

  151.   </p>
    152. 

  152.  </div>
    153. 

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