PHP | SplFileInfo isWritable() Function

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The SplFileInfo::isWritable() function is an inbuilt function of Standard PHP Library (SPL) in PHP which is used to check the file is writable or not.

Syntax:

bool SplFileInfo::isWritable( void )

Parameters: This function does not accept any parameter.

Return values: This function returns true on success or false on failure.

Note: Set the file permission before executing the program.

Below Programs illustrate the SplFileInfo::isWritable() function in PHP:

Program 1:

<?php 
   
// PHP Program to illustrate  
// Splfileinfo::isWritable() function 
   
$file = new SplFileInfo("gfg.txt"); 
$gfg = $file->isWritable(); 
   
// Print result 
var_dump($gfg); 
echo "</br>"; 
   
$file = new SplFileInfo(__FILE__); 
$gfg = $file->isWritable(); 
   
// Print result 
var_dump($gfg); 
   
?> 

Output:

bool(false)
bool(true)

Program 2:

<?php  
   
// PHP program to use array to check  
// multiple files  
   
$GFG = array( 
    "dummy.php", 
    "gfg_code.cpp", 
    "html/", 
    "frame.php"
); 
   
foreach ($GFG as &$file_name) {  
   
    // Create new SplFile Object  
    $file = new SplFileInfo($file_name);  
   
    $gfg = $file->isWritable(); 
   
    // Print result 
    var_dump($gfg); 
    echo "</br>"; 
}  
?>  

Output:

bool(true)
bool(false)
bool(true)
bool(false)

Reference: http://php.net/manual/en/splfileinfo.iswritable.php

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