PHP 删除特定字符串前的所有字符

我需要删除任何字符串中的所有字符，然后在字符串中出现这种情况:

"www/audio"

不知道我该怎么做。

php
string

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最佳答案

You can use strstr to do this.

echo strstr($str, 'www/audio');

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You can use substring and strpos to accomplish this goal.

You could also use a regular expression to pattern match only what you want. Your mileage may vary on which of these approaches makes more sense.

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Considering

$string="We have www/audio path where the audio files are stored";  //Considering the string like this

Either you can use

strstr($string, 'www/audio');

$expStr=explode("www/audio",$string);
$resultString="www/audio".$expStr[1];

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I use this functions

function strright($str, $separator) {
if (intval($separator)) {
return substr($str, -$separator);
} elseif ($separator === 0) {
return $str;
} else {
$strpos = strpos($str, $separator);


if ($strpos === false) {
return $str;
} else {
return substr($str, -$strpos + 1);
}
}
}


function strleft($str, $separator) {
if (intval($separator)) {
return substr($str, 0, $separator);
} elseif ($separator === 0) {
return $str;
} else {
$strpos = strpos($str, $separator);


if ($strpos === false) {
return $str;
} else {
return substr($str, 0, $strpos);
}
}
}