定义和用法
该strpos （ ）函数返回的立场，首次出现了一系列内部其他字串。
如果字符串是没有发现，此功能返回FALSE 。
语法
strpos(string,find,start)
Parameter |
Description |
|---|---|
| string | 必选, |
| find | 必需的。指定的查找字符串 |
| start | 可选,从哪里开始找 |
提示和说明 注： strpos （ ）函数是区分大小写的。 例如
<!--?phpecho strpos("Hello world!","wo");?-->
结出结果:6
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