PHP Regular Expression Exercises: Extract text (within parenthesis) from a string

Last update on December 20 2024 10:19:22 (UTC/GMT +8 hours)

Write a PHP script to extract text (within parenthesis) from a string.

Sample strings : 'The quick brown [fox].'

Visual Presentation:

Sample Solution:

PHP Code:

<?php
// Define the input text
$my_text = 'The quick brown [fox].';

// Use preg_match to find the substring enclosed in square brackets
preg_match('#\[(.*?)\]#', $my_text, $match);

// Print the matched substring captured within the square brackets
print $match[1]."\n";
?>

Output:

fox

Explanation:

In the exercise above,

• <?php: PHP opening tag.
• $my_text = 'The quick brown [fox].';: Assigns a string containing square brackets to the variable $my_text.
• preg_match('#\[(.*?)\]#', $my_text, $match);: Uses a regular expression pattern to match text enclosed within square brackets. The "preg_match()" function searches for this pattern in '$my_text' and stores the result in the '$match' array.
• print $match[1]."\n";: Prints the matched substring captured within the square brackets.

Flowchart :

PHP Code Editor:

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