PHP Deprecated: Function eregi() is deprecated - Solution

PHP Deprecated: Function eregi() is deprecated - Solution

With the update and iteration of PHP versions, some old functions are gradually abandoned, including Function eregi(). This is a PHP Deprecated warning, meaning that using the eregi() function may cause problems in future versions. This article explains how to solve this problem and gives corresponding code examples.

eregi() function was used in earlier versions of PHP to perform case-insensitive regular expression matching on strings. However, it has been deprecated since PHP 5.3.0 and has been completely removed in PHP 7.0.0.

If the eregi() function appears in your code, you will receive a warning message similar to the following when you run PHP 5.3.0 or above:

"PHP Deprecated : Function eregi() is deprecated in your_script.php on line Method 1: Use preg_match() instead of eregi()

preg_match() is a powerful regular expression matching function that not only supports case sensitivity, but is also more efficient and standardized. You can replace eregi() with the following code example:

if (preg_match("/pattern/i", $string)) {
    // do something
}

In the above code,

/pattern/i

can be the pattern you need to match,

i

Flag means case-insensitive. If the match is successful, you can perform the corresponding operation in the code // do something. Method 2: Use stripos() instead of eregi()If you don’t need to use regular expressions for matching, you can use the stripos() function instead of eregi(). The stripos() function is used to search for a substring in a string and is not case sensitive. You can use it according to the following sample code:

if (stripos($string, "pattern") !== false) {
    // do something
}

In the above code,

"pattern"

represents the substring you need to find. If a match is found, you can perform the appropriate action in

// do something

. No matter which method you choose, you need to choose a suitable solution based on your actual coding rules and needs. Summary:

This article introduces the PHP Deprecated warning and provides two solutions to replace the deprecated eregi() function. You can choose to use the preg_match() function for regular expression matching, or the stripos() function for simple substring searches. By choosing the right replacement function wisely, you can eliminate warning messages and ensure that your code runs properly in new versions of PHP.

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