I have a logic like this
It initializes the flag variable as "T" at the beginning of the loop everytime
Inside each loop it checks for two conditions and updates the flag variable as "A" or "B"
In the end of the loop it checks for the value of the variable flag for "A" or "B" and execute... (4 Replies)
Hi,
I have variables like
var1
var2
var3
var4
in
if loop i am trying to check the condition
if(variable == "var") then
echo $variable
endif (0 Replies)
Gurus,
I need to read a line from a file and strip the characters from it and compare the stripped value with the value I pass to the script while executing it. Below is the code for the same. But when i execute the code, it is throwing an error.
#!/bin/ksh
. /home/.i_env
... (14 Replies)
hi all,
i have a problem...no dream :-)
i want to scan a file i use the loop famous
while read line
do
do < myfile
but this scan must finish when find the another string .
How can i do it?
best regards for all.
Francesco
Please use descriptive subjects. "script." doesn't tell... (5 Replies)
Hi,
I am in trouble. I can get inside my condition test inside a loop :
I am in ksh (solaris)
while read file
do
<commande to retrieve file> >> ${LOG_RETRIEVE_FILE.log}
msg_err=$(cat ${LOG_RETRIEVE_FILE.log} | grep "error retrieve")
if ; then
<sendmail>
exit 1
fi
done
I tried... (6 Replies)
Hi,
I have a file in the following format
"SYLVESTER,WILLARD G"|"S00633600"|"221052958A"|"H2256"|"015"|""|"00000042BASJ"|"665303"|"N"|"20100211"|"380.4"|""|""|""|"5400"|"20110218"|""|"20110218"|"FEESC"|"D"|"F"|"P"
"PURINGTON-KELLEY,C"|"S00808783"|"029424717A"|"H2256"|"024"|"MEMBER JOINED... (3 Replies)
Hi,
I was trying to write a shell script which reads csv file and sends mail in html format along with tables. Hope i have completed 1st part , but while sending mail i was trying to highlight some rows in the table based on the egrep outcome. If the string exists in line/INPUT, i am trying to... (4 Replies)
Hi,
I Have to check two condition in while loop every 2 minutes. while loop is accompanied with number of times it will check.Please help in putting the two condition in while loop as appropriate.
z= input value,
A=1
while
do
1.check the file output,if the file output is N then keep on... (2 Replies)
Discussion started by: netdbaind
2 Replies
LEARN ABOUT PHP
debug_zval_dump
DEBUG_ZVAL_DUMP(3) 1 DEBUG_ZVAL_DUMP(3)debug_zval_dump - Dumps a string representation of an internal zend value to outputSYNOPSIS
void debug_zval_dump (mixed $variable, [mixed $...])
DESCRIPTION
Dumps a string representation of an internal zend value to output.
PARAMETERS
o $variable
- The variable being evaluated.
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
debug_zval_dump(3) example
<?php
$var1 = 'Hello World';
$var2 = '';
$var2 =& $var1;
debug_zval_dump(&$var1);
?>
The above example will output:
&string(11) "Hello World" refcount(3)
Note
Beware the refcount
The refcount value returned by this function is non-obvious in certain circumstances. For example, a developer might expect the
above example to indicate a refcount of 2. The third reference is created when actually calling debug_zval_dump(3).
This behavior is further compounded when a variable is not passed to debug_zval_dump(3) by reference. To illustrate, consider a
slightly modified version of the above example:
Example #2
<?php
$var1 = 'Hello World';
$var2 = '';
$var2 =& $var1;
debug_zval_dump($var1); // not passed by reference, this time
?>
The above example will output:
string(11) "Hello World" refcount(1)
Why refcount(1)? Because a copy of $var1 is being made, when the function is called.
This function becomes even more confusing when a variable with a refcount of 1 is passed (by copy/value):
Example #3
<?php
$var1 = 'Hello World';
debug_zval_dump($var1);
?>
The above example will output:
string(11) "Hello World" refcount(2)
A refcount of 2, here, is extremely non-obvious. Especially considering the above examples. So what's happening?
When a variable has a single reference (as did $var1 before it was used as an argument to debug_zval_dump(3)), PHP's engine opti-
mizes the manner in which it is passed to a function. Internally, PHP treats $var1 like a reference (in that the refcount is
increased for the scope of this function), with the caveat that if the passed reference happens to be written to, a copy is made,
but only at the moment of writing. This is known as "copy on write."
So, if debug_zval_dump(3) happened to write to its sole parameter (and it doesn't), then a copy would be made. Until then, the
parameter remains a reference, causing the refcount to be incremented to 2 for the scope of the function call.
SEE ALSO var_dump(3), debug_backtrace(3), References Explained, References Explained (by Derick Rethans).
PHP Documentation Group DEBUG_ZVAL_DUMP(3)