php string function

7/21/2019 PHP String Function

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PHP String Function

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PHP string function helps us to manipulate string in various ways.

There are various types of string function available.

Here we discuss some important functions and its use with examples.

1(ec)o2(trtolo'er * +,(trtou--er * +.(lc/rt*+

(uc/rt*+(uc'ord*+(u3tr4re-lace * +



1. echo: It is used to print one or more string .Echo

function is faster than print print function.

Example:<!doctype <!DOCTYPE html><html><head>

<title>string function</title></head><body>

<phpecho "tring #unction>

</body></html>

Output:String Function

//echo is not actually function so we are notrequired to use parentheses with it.



2. strtolower: It converts a string to lower case letter.

Example:

<!doctype <!DOCTYPE html><html><head>

<title>string function</title></head>

<body><phpecho strtolo%er&"T'()* #unction+ ,>

</body></html>

Output:string function



3. strtoupper ( ): It converts a string to upper case

letter.

Example:



<phpecho strtoupper&"tring #unction+ ,>

</body>

</html>

Output:STI!" #$!%TIO!



4. lcfirst( ): It converts the first character of a string to

lower.

Example:


<title>string function</title>

</head><body>

<phpecho lc-rst&"tring #unction+ ,>

</body>

</html>

Output:string #unction



5. ucfirst( ): It converts the first character of a string

to upper case.

Example:



<phpecho uc-rst&string function+ ,>

</body>

</html>

Output:String function



6. ucwords( ): It converts the first character of every

word to upper case.

Example:



<phpecho uc%ords&string function+ ,>

</body>

</html>

Output:String #unction



7. substr_replace( ): It replaces a part of a string

with another string.

The syntax is:Substr&replace 'string( replacement( start ( length)

There are various way to replace string. Here theexamples are *

Example:<!doctype <!DOCTYPE html><html><head>


<phpecho substr.replace&hello %orldnandon0+,>

</body></html>



Output:hello nandon

++here it replace world to nandon . !umber , means thereplacement starts from , position of the string.-xample :<!doctype <!DOCTYPE html><html><head>


<phpecho substr.replace&hello %orld nandon12+,>

</body>

</html>Output: hello nandon++here in this example we use '/) negative sign so it willcount the word from the right hand side and replace.



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