[英]Checking for multiple strpos values
I am wondering how to complete multiple strpos checks.我想知道如何完成多个 strpos 检查。
Let me clarify:让我澄清一下:
I want strpos to check the variable "COLOR" to see if any numbers from 1 to 8 are anywhere in the variable.我希望 strpos 检查变量“COLOR”以查看变量中是否有从 1 到 8 的任何数字。 If any numbers from 1 to 8 are present, I want to echo "selected".
如果存在从 1 到 8 的任何数字,我想回显“已选择”。
Examples:例子:
Let's say only the number 1 is in the variable, it will echo "selected".假设变量中只有数字 1,它将回显“已选择”。
Let's say the numbers 1 2 and 3 are in the variable, it will echo "selected."假设数字 1 2 和 3 在变量中,它将回显“已选择”。
Let's say the numbers 3 9 25 are in the variable, it will echo "selected" (because of that 3.!).假设数字 3 9 25 在变量中,它将回显“selected”(因为 3.!)。
Let's say only the number 9 is in the variable, it will NOT echo.假设变量中只有数字 9,它不会回显。
Let's say the numbers 9 25 48 are in the variable, it will NOT echo.假设数字 9 25 48 在变量中,它不会回显。
I just used the OR statement (||)我刚刚使用了 OR 语句 (||)
<?php
if (strpos($color,'1') || strpos($color,'2') || strpos($color,'3') || strpos($color,'4') || strpos($color,'5') || strpos($color,'6') || strpos($color,'7') || strpos($color,'8') === true)
{
//do nothing
} else {
echo "checked";
}
?>
try preg match for multiple尝试预匹配多个
if (preg_match('/word|word2/i', $str))
I found the above answers incomplete and came up with my own function:我发现上述答案不完整,并提出了我自己的功能:
/**
* Multi string position detection. Returns the first position of $check found in
* $str or an associative array of all found positions if $getResults is enabled.
*
* Always returns boolean false if no matches are found.
*
* @param string $str The string to search
* @param string|array $check String literal / array of strings to check
* @param boolean $getResults Return associative array of positions?
* @return boolean|int|array False if no matches, int|array otherwise
*/
function multi_strpos($string, $check, $getResults = false)
{
$result = array();
$check = (array) $check;
foreach ($check as $s)
{
$pos = strpos($string, $s);
if ($pos !== false)
{
if ($getResults)
{
$result[$s] = $pos;
}
else
{
return $pos;
}
}
}
return empty($result) ? false : $result;
}
Usage:用法:
$string = "A dog walks down the street with a mouse";
$check = 'dog';
$checks = ['dog', 'cat', 'mouse'];
#
# Quick first position found with single/multiple check
#
if (false !== $pos = multi_strpos($string, $check))
{
echo "$check was found at position $pos<br>";
}
if (false !== $pos = multi_strpos($string, $checks))
{
echo "A match was found at position $pos<br>";
}
#
# Multiple position found check
#
if (is_array($found = multi_strpos($string, $checks, true)))
{
foreach ($found as $s => $pos)
{
echo "$s was found at position $pos<br>";
}
}
If all value is seperated by a space in value then you can do the following.如果所有值都由值中的空格分隔,那么您可以执行以下操作。 Otherwise ignore it.
否则忽略它。
It is needed because if you have $color="25";
这是必要的,因为如果你有
$color="25";
then strpos
will found both 2, 5 and 25 so required result will not come然后
strpos
将同时找到 2、5 和 25,因此不会出现所需的结果
<?php
$color='1 25 48 9 3';
$color_array = explode(" ",$color);
$find = range(1,8);//array containing 1 to 8
$isFound = false;
foreach($find as $value) {
if(in_array($value, $color_array))
{
$isFound = true;
break;
}
}
if($isFound) {
echo "Selected";
}
?>
if (preg_match('/string1|string2|string3/i', $str)){
//if one of them found
}else{
//all of them can not found
}
A simple preg_match()
call using wordboundaries around a numeric character class will be completely accurate and suitable for your task.使用围绕数字字符类的字边界的简单
preg_match()
调用将完全准确并适合您的任务。
The word boundary metacharacters ensure that full-integer matching is executed -- no false positive (partial) matching occurs.单词边界元字符确保执行全整数匹配——不会发生误报(部分)匹配。
$array = array(
'text 1 2 and 3 text',
'text 3 9 25 text',
'text 9 25 48 text',
);
foreach ($array as $color) {
echo "\n---\n$color";
echo "\n\t" , preg_match('~\b[1-8]\b~', $color, $out) ? "checked (satisfied by {$out[0]})" : 'not found';
echo "\n\tChad says: " , (strpos($color,'1') || strpos($color,'2') || strpos($color,'3') || strpos($color,'4') || strpos($color,'5') || strpos($color,'6') || strpos($color,'7') || strpos($color,'8') ? 'found' : 'not found');
}
Output:输出:
---
text 1 2 and 3 text
checked (satisfied by 1)
Chad says: found
---
text 3 9 25 text
checked (satisfied by 3)
Chad says: found
---
text 9 25 48 text
not found
Chad says: found
As for how to implement this technique in your script...至于如何在你的脚本中实现这种技术......
if (!preg_match('~\b[1-8]\b~', $color)) {
echo 'checked';
}
I had similar needs so here is function that get position of closest substring in given string, where search substrings are provided in array.我有类似的需求,所以这里是获取给定字符串中最近子字符串位置的函数,其中搜索子字符串在数组中提供。 It also pass by reference matched substring.
它还通过引用匹配的子字符串传递。 Note that order matters in case some substring contains other substring - example: '...' and '.'.
请注意,如果某些子字符串包含其他子字符串,则顺序很重要 - 例如:'...' 和 '.'。
function strpos_arr($haystack, $needleN, $offset = 0, &$needle = '') {
if (!is_array($needleN)) {
return strpos($haystack, $needleN, $offset);
} else {
$res = FALSE;
foreach ($needleN as $ind => $item) {
$pos = strpos($haystack, $item, $offset);
if ($pos !== FALSE && ($res === FALSE || $pos < $res)) {
$res = $pos;
$needle = $item;
}
}
return $res;
}
}
Please Try this, it will help you.请试试这个,它会帮助你。
if ( (strpos($str, $your_string) !== false) || (strpos($your_string, $str) !== false) ) {
// Matched
} else {
// Not Matched
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.