php在字符串中搜索指定字符中的任意一个的函数strpbrk()

<?php
echo strpbrk("Hello world!","oe");
?>

strpbrk(string,charlist)

<?php
echo strpbrk("Hello world!","W");
echo "<br>";
echo strpbrk("Hello world!","w");
?>

/* STRPBRK.C */  
  
#include <string.h>  
#include <stdio.h>  
  
void main( void )  
{  
   char string[100] = "The 3 men and 2 boys ate 5 pigs\n";  
   char *result;  
   /* Return pointer to first &#39;a&#39; or &#39;b&#39; in "string" */  
   printf( "1: %s\n", string );  
   result = strpbrk( string, "0123456789" );  
   printf( "2: %s\n", result++ );  
   result = strpbrk( result, "0123456789" );  
   printf( "3: %s\n", result++ );  
   result = strpbrk( result, "0123456789" );  
   printf( "4: %s\n", result );  
}

1: The 3 men and 2 boys ate 5 pigs

2: 3 men and 2 boys ate 5 pigs

3: 2 boys ate 5 pigs

4: 5 pigs