<?php
if (strpos('fsdf fsdfa helloword agfasd', 'helloword') === false)
{
echo 'No!';
}
else
{
echo 'Find!';
}
?>
if (strpos('fsdf fsdfa helloword agfasd', 'helloword') === false)
{
echo 'No!';
}
else
{
echo 'Find!';
}
?>
Find position of first occurrence of a string (PHP 3, PHP 4, PHP 5) int strpos ( string haystack, mixed needle [, int offset] )Returns the numeric position of the first occurrence of needle in the haystack string. Unlike the strrpos(), this function can take a full string as the needle parameter and the entire string will be used. If needle is not found, strpos() will return boolean FALSE. 警告:
本函数可能返回布尔值 FALSE,但也可能返回一个与 FALSE 等值的非布尔值,例如 0 或者 ""。请参阅布尔类型章节以获取更多信息。应使用 === 运算符来测试本函数的返回值。手册里有的啊
Find position of first occurrence of a string (PHP 3, PHP 4, PHP 5) int strpos ( string haystack, mixed needle [, int offset] )Returns the numeric position of the first occurrence of needle in the haystack string. Unlike the strrpos(), this function can take a full string as the needle parameter and the entire string will be used. If needle is not found, strpos() will return boolean FALSE. 警告:
本函数可能返回布尔值 FALSE,但也可能返回一个与 FALSE 等值的非布尔值,例如 0 或者 ""。请参阅布尔类型章节以获取更多信息。应使用 === 运算符来测试本函数的返回值。手册里有的啊
可以用
preg_match('/\bhelloword\b/',$str)
可以用
preg_match('/\bhelloword\b/',$str)
-----------------------------------------------strpos('fsdf fsdfa helloword agfasd', ' helloword ')