How can the in_array function be used in PHP to search for specific content within an array of text lines read from a file?

To search for specific content within an array of text lines read from a file in PHP, you can use the in_array function. This function checks if a value exists in an array and returns true if the value is found, or false if it is not. You can loop through each line of text from the file, then use the in_array function to check if the specific content is present in each line. 

$file = file('example.txt'); // Read file into an array
$searchTerm = 'specific content';

foreach($file as $line){
    if(in_array($searchTerm, $line)){
        echo "The specific content was found in the file.";
        break;
    }
}

Keywords

in_array PHP array text lines file handling

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