Presentation on php string function part-1
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The document discusses various PHP string functions including trim(), rtrim(), ltrim(), chop(), and md5() for manipulating strings by removing whitespace or characters, calculating hashes, and converting arrays to strings. It also explains the usage of htmlspecialchars() for HTML entity conversion, and nl2br() for inserting line breaks. Each function is demonstrated with example code and expected output.
Presentation on php string function part-1
- 3. Strip whitespace (or other characters) from the beginning and end of a string. <?php $str = ‘hello Bangladesh'; echo trim($str,’h’); ?> Output ello Banglades
- 4. The rtrim() function removes whitespace or other predefined characters from the right side of a string. <?php $str = "Hello World!"; echo $str . "<br>"; echo rtrim($str,"World!"); ?> Output: Hello World! Hello
- 5. Removes whitespace or other characters from the left side of a string <?php $str = "Hello World!"; echo $str . "<br>"; echo ltrim($str,"Hello"); ?> Output: Hello World! World!
- 6. Removes whitespace or other characters from the right end of a string. <?php $str = 'Bangladesh is a wonderful country'; echo chop($str,'country'); ?> Output: Bangladesh is a wonderful
- 7. Calculates the MD5 hash of a string. <?php $str = 'Hello'; echo md5($str); ?> Output: 8b1a9953c4611296a827abf8c47804d7
- 8. Binary format. <?php $str = 'hello123'; echo md5($str,true); ?> Output: � ��b�(�@|T�k�'
- 9. Alias of implode(). <?php $arr = array('Hello','World!','Beautiful','Day!'); echo join(" ",$arr); ?> Output: Hello World! Beautiful Day!
- 10. Converts some predefined characters to HTML entities. <?php $str = "This is some <b>bold</b> text. echo htmlspecialchars($str); ?> Output: This is some <b>bold</b> text.
- 11. Inserts HTML line breaks in front of each new line in a string. <?php echo nl2br("One line.nAnother line.nLine Numbet 3"); ?> Output: One line. Another line. Line Numbet 3