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This article mainly explains "especially practical PHP function sharing". The explanation content in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian slowly and deeply to study and learn "especially practical PHP function sharing" together.

1.highlight_string()

When a website needs to showcase PHP generation. code time, highlight_string() function. Counting becomes very useful. The letter. Number by using PHP language. Fargo. Bright journey. The face defined in the preface. Color, lose. Out or back. Go back to the language of the given PHP code. Fargo. Light version.

Examples:

2.str_word_count()

The letter. The number must be passed on. Give me a reference. Number, according to reference. Number Type Returns Single. Number of words.

As follows:

3.levenshtein()

The letter. Number mainly returns two characters. Levenshtein distance between strings. Levenshtein distance, also known as edit. A distance between two characters. The minimum number of editing operations required to convert one string to another.

Permitted edition. Array operations include replacing one character with another, inserting a character, and deleting a character. This function is useful for finding typos submitted by users.

Examples:

4.get_defined_vars()

The letter. Number Returns a list containing all defined variables. A lot of lists. Dimension. Group, these changes. Quantity includes rings. Environmental variables, clothing. Server variables and user-defined variables.

Examples:

print_r(get_defined_vars());

5.escapeshellcmd()

The letter. Numbers are used to avoid characters. A special character in a string. This prevents users from going astray. The door broke. Take it off. Service system. The system. You can use this letter. Number with exec() or system() two functions. This can reduce malicious acts.

Examples:

6.checkdate()

This function can be used to check the day. Whether the period is valid, for example, the year is 0 to 32767 years, the month is 1 to December, and the day changes with the month and leap year.

Examples:

7.php_strip_whitespace()

The letter. Number can return deleted PHP comments as well as the source of white space characters. Code text. Oh, this generation. A comparison between the number of codes and the number of comments is useful.

Examples:

Output:

Thank you for reading, the above is the content of "especially practical PHP function sharing", after learning this article, I believe that everyone has a deeper understanding of the problem of especially practical PHP function sharing, and the specific use needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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