php search text file for any wav file names - php

Question

I have a series of files which contain raw text or json data, in these files will be wav file names. All of the wav file have the suffix of .wav
Is there anyway using php I can search an individual text or json file and return an array of of any .wav files found ?
This example of random text contains 6 .wav files, how would I search this and extract the filenames ?
Spoke as as other again ye. Hard on to roof he drew. So sell side newfile.wav ye in mr evil. Longer waited mr of nature seemed. Improving knowledge incommode objection me ye is prevailed playme.wav principle in. Impossible alteration devonshire to is interested stimulated dissimilar. To matter esteem polite do if.
Spot of come to ever test.wav hand as lady meet on. Delicate contempt received two yet advanced. Gentleman as belonging he commanded believing dejection in by. On no am winding chicken so behaved. Its preserved sex enjoyment new way behaviour. Him yet devonshire celebrated welcome.wav especially. Unfeeling one provision are smallness resembled repulsive.
Raising say express had chiefly detract demands she. Quiet led own cause three him. Front no party young abode state up. Saved he do fruit woody of to. Met defective are allowance two perceived listening consulted contained. It chicken oh colonel pressed excited suppose to shortly. He improve started no we manners another.wav however effects. Prospect humoured mistress to by proposal marianne attended. Simplicity the far admiration preference everything. Up help home head spot an he room in.
Talent she for lively eat led sister. Entrance strongly packages she out rendered get quitting denoting led. Dwelling confined improved it he no doubtful raptures. Several carried through an of up attempt gravity. Situation to be at offending elsewhere distrusts if. Particular use for considered projection cultivated. Worth of do doubt shall it their. Extensive existence up me last.wav contained he pronounce do. Excellence inquietude assistance precaution any impression man sufficient.
I've tries this, but I get no results.
$lines = file('test.txt');
foreach ($lines as $line_num => $line) {
$line = trim($line);
if (strpos($line, '*.wav') !== false) {
echo ($line);
}
}
The above text should return :
newfile.wav
playme.wav
test.wav
welcome.wav
another.wav
last.wav
Thanks
UPDATE:
Using the following:
$text = file_get_contents('test.txt');
preg_match_all('/\w+\.wav/', $text, $matches);
var_dump($matches);
results in an array of :
array(1) {
[0]=>
array(6) {
[0]=>
string(11) "newfile.wav"
[1]=>
string(10) "playme.wav"
[2]=>
string(8) "test.wav"
[3]=>
string(11) "welcome.wav"
[4]=>
string(11) "another.wav"
[5]=>
string(8) "last.wav"
}
}
So an array of the wav files with in an array, how do I get just the array of wav files ? Thanks
This does't work correctly for wav files with spaces in there names.
any ideas ?

Answer 1

This tool might help you to design an expression as you wish and test it, maybe something similar to:
([a-z]+\.wav)
You can also add more boundaries to it, if you might want to.
here]2]2
Graph
This graph shows how the expression would work and you can visualize other expressions in this link:
PHP Code
You could also use preg_match_all to do so, maybe something similar to:
$re = '/([a-z]+\.wav)/m';
$str = 'Spoke as as other again ye. Hard on to roof he drew. So sell side newfile.wav ye in mr evil. Longer waited mr of nature seemed. Improving knowledge incommode objection me ye is prevailed playme.wav principle in. Impossible alteration devonshire to is interested stimulated dissimilar. To matter esteem polite do if.
Spot of come to ever test.wav hand as lady meet on. Delicate contempt received two yet advanced. Gentleman as belonging he commanded believing dejection in by. On no am winding chicken so behaved. Its preserved sex enjoyment new way behaviour. Him yet devonshire celebrated welcome.wav especially. Unfeeling one provision are smallness resembled repulsive.
Raising say express had chiefly detract demands she. Quiet led own cause three him. Front no party young abode state up. Saved he do fruit woody of to. Met defective are allowance two perceived listening consulted contained. It chicken oh colonel pressed excited suppose to shortly. He improve started no we manners another.wav however effects. Prospect humoured mistress to by proposal marianne attended. Simplicity the far admiration preference everything. Up help home head spot an he room in.
Talent she for lively eat led sister. Entrance strongly packages she out rendered get quitting denoting led. Dwelling confined improved it he no doubtful raptures. Several carried through an of up attempt gravity. Situation to be at offending elsewhere distrusts if. Particular use for considered projection cultivated. Worth of do doubt shall it their. Extensive existence up me last.wav contained he pronounce do. Excellence inquietude assistance precaution any impression man sufficient. ';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Test Script for RegEx
const regex = /([a-z]+\.wav)/gm;
const str = `Spoke as as other again ye. Hard on to roof he drew. So sell side newfile.wav ye in mr evil. Longer waited mr of nature seemed. Improving knowledge incommode objection me ye is prevailed playme.wav principle in. Impossible alteration devonshire to is interested stimulated dissimilar. To matter esteem polite do if.
Spot of come to ever test.wav hand as lady meet on. Delicate contempt received two yet advanced. Gentleman as belonging he commanded believing dejection in by. On no am winding chicken so behaved. Its preserved sex enjoyment new way behaviour. Him yet devonshire celebrated welcome.wav especially. Unfeeling one provision are smallness resembled repulsive.
Raising say express had chiefly detract demands she. Quiet led own cause three him. Front no party young abode state up. Saved he do fruit woody of to. Met defective are allowance two perceived listening consulted contained. It chicken oh colonel pressed excited suppose to shortly. He improve started no we manners another.wav however effects. Prospect humoured mistress to by proposal marianne attended. Simplicity the far admiration preference everything. Up help home head spot an he room in.
Talent she for lively eat led sister. Entrance strongly packages she out rendered get quitting denoting led. Dwelling confined improved it he no doubtful raptures. Several carried through an of up attempt gravity. Situation to be at offending elsewhere distrusts if. Particular use for considered projection cultivated. Worth of do doubt shall it their. Extensive existence up me last.wav contained he pronounce do. Excellence inquietude assistance precaution any impression man sufficient. `;
let m;
while ((m = regex.exec(str)) !== null) {
// This is necessary to avoid infinite loops with zero-width matches
if (m.index === regex.lastIndex) {
regex.lastIndex++;
}
// The result can be accessed through the `m`-variable.
m.forEach((match, groupIndex) => {
console.log(`Found match, group ${groupIndex}: ${match}`);
});
}

Answer 2

This is why regular expressions were invented.
$text = file_get_contents('test.txt');
preg_match_all('/(\w+\.wav)/', $text, $matches);
var_dump($matches[0]);
Some good resources:
preg_match
preg_replace
regex101.com allows you to test expressions realtime
output:
array(6) {
[0] => string(11) "newfile.wav"
[1] => string(10) "playme.wav"
[2] => string(8) "test.wav"
[3] => string(11) "welcome.wav"
[4] => string(11) "another.wav"
[5] => string(8) "last.wav"
}

Answer 3

You are almost there. You can explode the $line in terms of spaces. Now, you go through each word and check if ends with a .wav extension. If yes, you print the word.
<?php
foreach ($lines as $line_num => $line) {
$line = trim($line);
$words = explode(" ",$line);
foreach($words as $each_word){
$wav_index = strpos($each_word, '.wav');
if ($wav_index !== false && $wav_index === strlen($each_word) - 4) { // strict check to make sure string ends with a .wav and not being elsewhere
echo $each_word,PHP_EOL;
}
}
}