php检测数据类型

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">检测数据类型即对数据类型进行检测，判断所检测类型是否属于检测类型，符合则返回真，否则返回假。检测数据类型定义如下：<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_bool

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为布尔类型，例，<font face="Times New Roman">is_bool(srue)  is_bool(false)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_string

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为字符串型，例，<font face="Times New Roman">is_string(<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">‘<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">string<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">’<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">)  is_string(1234)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_float/double

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为浮点型，例，<font face="Times New Roman">is_float(3.1415)  is_float(<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">‘<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">3.1415<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">’<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_integer/int

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为整型，例，<font face="Times New Roman">is_integer(34)  is_integer(<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">‘<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">34<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">’<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_null

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为空值，例，<font face="Times New Roman">is_null(null)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_array

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为数组，例，<font face="Times New Roman">is_array($arr)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_object

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为一个对象，例，<font face="Times New Roman">is_object($obj)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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is_numeric

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">是否为数字或由数字组成的字符串，例，<font face="Times New Roman">is_numeric(<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">‘<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">5<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">’<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">)  is_numeric(<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">‘<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">bcc110<span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">’<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">)<span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">

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<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">示例

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'"><?PHP

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">$boo="1234567890";

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">if(is_numeric($boo))

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">echo "变量boo属由数字组成的字符串类型:".$boo;

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">else

<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: '宋体'; mso-spacerun: 'yes'">echo"无法判断";

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