I need to remove all characters from any string before the occurrence of this inside the string:
"www/audio"
Not sure how I can do this.
4 Answers
1 Comment
cfx
Quick note: you can use
strstr() to return the part of the string that comes before its argument too by calling echo strstr($str, 'www/audio', true);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');
Or
$expStr=explode("www/audio",$string);
$resultString="www/audio".$expStr[1];
3 Comments
Anyone
string functions are generally faster than array functions
Borjovsky
The explode is in fact a better answer, as the question was about removing the text before the string.
TheKLF99
explode could cause problems if you had multiple occurrences of the same string you were trying to remove - e.g. "we have www/audio path where the www/audio files are stored" would result in "path where the" if you wanted to use explode you could do something like foreach ( $expStr as $key => $value ) echo ( $key == 0 ? '' : 'www/audio'.$value ) ; or foreach ( $expStr as $key => $value ) echo ( $key == 0 ? '' : ( $key == 1 ? '' : 'www/audio' ).$value ) ; if you wanted to omit the initial www/audio.
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, $strpos);
}
}
}
You can use substring and strpos to accomplish this goal.
You could also use a regular expression to pattern match only what you want. Your mileage may vary on which of these approaches makes more sense.
s($str)->afterFirst('www/audio')ors($str)->afterLast('www/audio')helpful, as found in this standalone library.