例子 1. strpos() examples<?php $mystring = 'abc'; $findme = 'a'; $pos = strpos($mystring, $findme);// Note our use of ===. Simply == would not work as expected // because the position of 'a' was the 0th (first) character. if ($pos === false) { echo "The string '$findme' was not found in the string '$mystring'"; } else { echo "The string '$findme' was found in the string '$mystring'"; echo " and exists at position $pos"; }// We can search for the character, ignoring anything before the offset $newstring = 'abcdef abcdef'; $pos = strpos($newstring, 'a', 1); // $pos = 7, not 0 ?> 例子 2. stripos() examples //大小写敏感<?php $findme = 'a'; $mystring1 = 'xyz'; $mystring2 = 'ABC';$pos1 = stripos($mystring1, $findme); $pos2 = stripos($mystring2, $findme);// Nope, 'a' is certainly not in 'xyz' if ($pos1 === false) { echo "The string '$findme' was not found in the string '$mystring1'"; }// Note our use of ===. Simply == would not work as expected // because the position of 'a' is the 0th (first) character. if ($pos2 !== false) { echo "We found '$findme' in '$mystring2' at position $pos2"; } ?>
$mystring = 'abc';
$findme = 'a';
$pos = strpos($mystring, $findme);// Note our use of ===. Simply == would not work as expected
// because the position of 'a' was the 0th (first) character.
if ($pos === false) {
echo "The string '$findme' was not found in the string '$mystring'";
} else {
echo "The string '$findme' was found in the string '$mystring'";
echo " and exists at position $pos";
}// We can search for the character, ignoring anything before the offset
$newstring = 'abcdef abcdef';
$pos = strpos($newstring, 'a', 1); // $pos = 7, not 0
?> 例子 2. stripos() examples //大小写敏感<?php
$findme = 'a';
$mystring1 = 'xyz';
$mystring2 = 'ABC';$pos1 = stripos($mystring1, $findme);
$pos2 = stripos($mystring2, $findme);// Nope, 'a' is certainly not in 'xyz'
if ($pos1 === false) {
echo "The string '$findme' was not found in the string '$mystring1'";
}// Note our use of ===. Simply == would not work as expected
// because the position of 'a' is the 0th (first) character.
if ($pos2 !== false) {
echo "We found '$findme' in '$mystring2' at position $pos2";
}
?>